i disagree with many of the providers here, I used renuvion and body tite for a year before ANYONE and did 100s of cases with much much better results than liposuciton alone. they say its not better because they dont know how to use it. and I dont need to promote the device I use it because it givds much better results. the bottom line however, is that you need back lifting, mini tuck, and at least a mini brachioplasty.  if you do not do these skin removals because of scars or bigger procedures, liposuction + j plasma/renuvion will give you improgement but your back and arms will have some sagging and crepe skin and the stomach will be better but may have looseness when you bend forward. I suggest seeing an expert and I also think that you need hormonoal optimization for weight loss and skin tighteing (see link).