Congratulations on what you have achieved!
To address your saddlebags, lower buttocks, hips, and thighs, I would suggest liposuction. This can be done under general anesthesia and can all be done at the same time. I would then use this fat that had been aspirated from these areas, purify it, and transfer it to the buttock. This would result in a buttock augmentation using your own fat.
At a separate procedure, I would suggest an abdominoplasty. Liposuction alone of your abdomen would not result in optimal results and you would be left with a significant amount of excess skin of your abdomen. I believe the best treatment for your abdomen would be an abdominoplasty and this would certainly allow for tightening of the abdominal muscles from the sternum to the pubic region. Ideally, your result would be a flat stomach with tighter abdominal muscles.
I would perform the liposuction with the fat transfer first and then the abdominoplasty secondarily. You would probably need one month between the procedures. Compression garments would be important for optimal results in contouring. I suggest you take two weeks off from work after your first and second surgeries.
Dr.J. Timothy Katzen, M.D.