T.S.
I would hold off on this surgery. Changing the way you eat and exercise will help so much more. Eliminate most sugars and no carbs in the evening. Eat more soup, that way you get nutrition without unnecesary fattening stuff. Don't starve yourself. Eat fresh fruit and vegetables and small snacks and smaller meals. More water. No high fructose corn syrup which is in soda - this can add lbs easily! Buy bread, spaghetti sauce, etc without HFCS. No caffeine either.
I would really give this a try first. If you are walk/jogging, check your heart rate and if you aren't breaking a sweat and pushing your heart rate up, you aren't going to burn enough calories for your time and so won't see much weight loss. Try climbing stairs, this builds muscle in your legs which keeps burning calories even when you are still! Do you do situps? I lost some weight recently but I have this loose skin roll around my middle. I need to try and tighten up the skin and burn as much of it off as I can and then I am going to get a tummy tuck to remove the excess that can't be fixed by exercise because it's empty sagginess. I think it is too soon to go to surgery. Don't give up yet! After surgery, you could gain back if you don't fix what caused the weight gain in the first place, your habits.
Change your habits first, but you need to learn what habits you have that caused the problem. Good luck.