I’m 5,4 145 pounds Do I have enough fat for a bigger booty and to fill my hip dips? (Photos)

Thanks for the question. 
In this regard, I recommend you waist and back Liposculpture, getting better curves especially in the waist, improving your body contour.
Finally, I suggested take the fat we get and transfer to the buttocks and hips, to mold them and get better volume, contour and butt projection, is that we know as "Brazilian Butt Lift" (BBL).Kind regards

Hello and thank you for your question and sharing your photos. Based on these photos, you would be a good candidate for a Brazilian Butt Lift (BBL), which typically includes a 360 liposuction of the abdomen and flanks, thighs, arms, etc and fat grafting for gluteal augmentation. Liposuction of the flanks will narrow down the waist for an hourglass appearance and adding volume to buttocks in combination with liposuction of the lower back is intended at creating a natural curvy look.  Basically, BBL removes the fat from unwanted areas and transfers it to areas that are desirable. It's important to understand that BBL cannot change the underlying body frame and therefore, individual results can vary, as everyone has a different anatomy. I would seek consultation with a board-certified plastic surgeon for a full evaluation and advice. Best,
Pejman Aflaki, M.D.

Johns Hopkins-trained double board-certified plastic surgeon

In general, patients should be at a stable weight prior to surgery.  Gaining weight will likely only lead to disappointment after surgery as most patients cannot maintain the weight and results.  There are a lot of women who can get nice results despite thinking that there is not enough fat.
The thinner patient requires an expert at liposuction to remove as much fat as possible while leaving the skin smooth. I have liposuctioned models and thin patients with good results.  Fat can be taken from many different areas of the body including abdomen, sides, bra rolls, thighs, arms, underarms, flanks, lower back, upper back. You have to consider not only which areas will have perhaps the best fat, but also you have to consider which donor sites will have the fewest problems afterward with the liposuction.  In general, the abdomen and thighs are preferred, but, if those sites are not available, other areas can be used.  Creative liposuction with fat transfer to the hips can make hips appear lifted, and rounder.  If the waist was smaller at one time, the waist can likely be reduced to those same measurements or smaller provided the muscular and fascial integrity has remained the same.
Consult via Skype or in-person with a board certified PS who performs hundreds of BBLs annually with favorable patient reviews and photos showing significant results on his/her website.