Full tummy tuck or mini?

Thank you for the question and pictures. You should be very proud of the appearance of your abdominal wall, especially after multiple pregnancies! In my practice, I would not offer you a mini tuck operation.  I would either suggest that you avoid surgery altogether or undergo full tummy tuck surgery. Generally speaking, the “ideal” patient for tummy tuck surgery is one who has completed pregnancies, is psycho socially/emotionally/financially stable, has an excellent social support system surrounding him/her, is capable of arranging enough recovery time, does not smoke and who has reached a long-term stable weight.
In my opinion, the mini tummy tuck is an operation that produces very limited results and is very rarely indicated. It involves a shorter incision but does not address the majority of the abdominal wall issues present for most patients who present consultation. For example, the area of skin excised is quite small. The abdominal wall musculature is addressed below the umbilicus leaving the upper number wall potentially lax. The appearance of the umbilicus is not necessarily addressed sufficiently.
For the vast majority of patients who have had pregnancies and/or weight loss a full abdominoplasty is necessary to achieve the desired results. When the time is right, seek consultation with board-certified plastic surgeons who can demonstrate significant experience helping patients achieve the types of outcomes you would be pleased with. You may find the attached link, dedicated to tummy tuck surgery concerns, helpful to you as you learn more. Best wishes.

It is always difficult to determine the level of correction required through photographs but given your pictures you would likely benefit from a limited of mini abdominoplasty. These are good options for patients who have skin excess below the belly button. As with any procedure, it is always best to have an in person consultation with a Plastic Surgeon who can develop a treatment plan to suit your needs.