Hi. You've done your homework. In our State it is against the law to extract more than 1 liter of supernatant fat when combined with any other procedure. Base on your own photos ad those of your wish results, 500 cc of fat per,side will barely affect your buttock contour.I would suggest a BBL first so we can obtain the benefit of the abdominal fat followed by the tummy tuck 3 months later. Base on your photos, I feel that you will need a minimum of 1000 cc per side to have a shapely rounded bottom. Always seek out the opinion of a surgeon certified by the American Board of Plastic Surgery with years of experience in liposuction and fat transfers. Furthermore request to see before and after photos of previous patients by that doctor....not a clinic or surgery center. Do your homework......research and verify the doctor's credentials. Have they had problems with the Board of Medicine, disciplinary or otherwise. Any law suits? The key is............ does the surgeon have a keen sense of aesthetics? Can he/she create a shapely, attractive buttock or are they just technicians that wind up with large unshapely behinds? The same holds true for the liposuction portion of the procedure. Understand that liposuction whether SAL, PAL or UAL ( not including LAL because the fat obtained through this technique will not be useful) is not that technically challenging. However, the keen aesthetic eye will determine the eventual work of art.We are creators and have the ability to turn out beautiful works of art. Simply put................not all artists create quality work.How about the center, clinic or facility? Are they accredited by a national organization or do they just have State approval. Understand that at the current time, there are three nationally recognized organizations responsible for the highest levels of patient safety, AAAASF, AAACH and JCHO. You owe it to yourself to position yourself for the best possible results but under the most stringent safety regulations, If you have kids, even more so.How about anesthesia? Will you have a medical doctor certified by the American Board of Anesthesiology or a certified nurse anesthetist (CRNA)? Understand that there is no substitute for research. Cosmetic surgery, no matter how simple it may be to the patients, are invasive procedures and as such carry certain risks and complications.In our office we use TouchMD which is a web based program in which patients have the ability to load their picture unto the program. We can accommodate patients from as far away as California. I then evaluate them and can actually draw on the picture to show a potential patient where the incisions would be located and how the procedure is to be realized. It's all done to comply with HIPPA which is the federal law that protects the patient's medical information. Look them up.Give yourself the highest percentage of a sucssesful operation. Good luck