Please think twice about surgery. You look great now, and your surgery is yet so recent, so when you are a bit further ahead you will save some more fat, and your skin doesn't look so saggy anymore. It really doesn't look saggy noe either.
I'm afraid you will regret it, and only end up will ugly scars.
I have lost half my bodyweight, but my skin has slowly gone back. Not all, I am 50 years old. But good enough for me.