Should I get a mini tummy tuck or full?

Based on your photos, I think you are a better candidate for a full tummy tuck. A tummy tuck will tighten the abdominal muscles and address the excess skin, giving your abdomen a flatter and more contoured appearance. A mini tummy tuck will not really address the loose abdominal tissues above your belly button. I recommend setting up a consultation with a board certified plastic surgeon to formulate a treatment plan that best meets your needs.

You need a formal evaluation by a licensed plastic surgeon and expert in abdominal surgery to determine what is best for you and your goals.
The key to a successful tummy tuck (or abdominoplasty) is to address the multiple layers that are damaged with pregnancies or weight fluctuations. For most patients I will perform internal rectus muscle plication to flatten and tighten the abdominal wall while creating a better waistline. The excess abdominal skin and fat is then excised and tightened, leaving a low, discreet transverse scar. Keeping this scar as low as possible is important so my patients can wear normal bikinis and low-cut jeans. For many patients, I will use liposuction as an adjunctive procedure to further refine the torso.
To accelerate recovery and reduce the risk of complications, I spend extra time placing progressive tension sutures to tack the abdominal tissues down to the abdominal wall and eliminate space for fluid to collect. I also use a medication called Exparel that is a local anesthetic that releases over a 3-day period; by injecting this carefully in the surgical areas, particularly where the muscle is tightened, I am able to dramatically reduce the immediate discomfort associated with abdominoplasties.
Ideal candidates for this procedure are women who have had children or experienced extreme weight loss and were left with excess skin. During the evaluation, we will discuss your needs and identify the best abdominoplasty technique for you.
I suggest consulting with a board-certified plastic surgeon and expert in body contouring. - Dr. Cohen

Thank you for your question. Based on  your photos, you’re an excellent candidate for a tummy tuck with flank and back liposuction. This procedure will give you the flattest stomach possible, by correcting muscle separation to your abdomen, from having children, and removing the excess skin and fat. The flank and back liposuction, in addition to the tummy tuck, will contour your waist and give you an hourglass figure. I recommend consulting with a board certified plastic surgeon, who can create a personalized plan for you. Best of luck!

From your photographs, you most likely would benefit from a full tummy tuck procedure with associated liposuction.  One of the most common reasons why someone would want an Tummy Tuck is often due to the changes that have occurred during pregnancy. Some of these changes include loose or excess skin, excess fatty tissue and to a lesser degree, weakened or separated abdominal wall muscles.  I recommend to book a consultation with a board certified plastic surgeon to discuss your options. 

Congratulations on getting back to your pre-pregnancy weight! I highly recommend that you book an in person consultation with a board certified plastic surgeon as that is always the best way to decide what procedure would be best for you and will give you the result that you are looking to achieve. That said, it looks as though you would be a good candidate for a full tummy tuck. The tummy tuck or abdominoplasty is ultimately the most effective solution for those who want to
treat loose skin and muscle around the abdomen. Often during pregnancy, the two major rectus abdominal muscles
actually come apart—a huge testament to what a woman's body is capable of in
supporting the life and growth of her baby. For some women, these muscles do
not come back together after childbirth, creating a condition known as rectus
diastasis that gives us that lower abdominal fullness. Unfortunately, sit-ups
or other exercises won't bring these muscles back together. But with a tummy
tuck, we're able to suture them together while also removing excess skin and
fat.

You appear to be a good candidate for a full tummy tuck with some liposuction for sculpting (including the flanks). Consult with a board certified plastic surgeon to learn what options are available to you. Good luck.

I believe that a slightly larger scar (standard) will result in a better result so I think a standard will likely result in a better result for most people in between a mini and standard 

It is a rare individual in whom the mini TT produces the best result.  The mini TT would only address the skin below the bellybutton, leaving the upper abdominal wall potentially lax. With a mini TT the bellybutton is not necessarily addressed sufficiently.  
Would recommend that you consider a short-scar TT in lieu of a mini TT.  A short-scar TT (The shorter scar it leaves is the same length as that of the mini tummy tuck) is right for patients who have loose skin, residual fat, and drooping muscle tissue in the abdominal area. Ideal patients have to be in general good health and somewhere close to their ideal body weight. A healthy lifestyle is a must, both before and after the procedure. To make sure that the results of the procedure last, many doctors ask that patients maintain a steady body weight for six months prior to the procedure and maintain their weight after the procedure.
The recovery period for a short-scar TT is shorter than that of a traditional TT. Generally, patients require only one or two weeks to recover before returning to work. Patients are advised not to perform strenuous exercises for four to six weeks after the surgery.

A tummy tuck does what you can't accomplish with diet and exercise alone, but it important to do your part in that regard. It looks like a full tummy tuck with liposuction for contouring of the flanks will give you the best result.

Your photos show that a mini tummy tuck would be inadequate and to achieve a good aesthetic outcome would require a full abdominoplasty. Seek a consultation with an experienced board certified plastic surgeon who can guide you through the process and decision.