Thank you

Well, I am not going to lie to you, my skin does not resemble the skin of someone who was never overweight. I think it is unrealistic to expect perfectly firm skin. I do have wings (droopy upper arms), the inside of my thighs are a little droopy, and so is my stomach. I also have a lot of old, silvery strech marks on my stomach, sides, and arms from when I was really fat.

It really isn't that bad though. I won't need surgical correction, and am hoping some of it firms up when my weight stabilizes. Do I want surgical correction? Yes, I won't lie... I would look way better with firm skin. I do think I will get surgery for my arms and a tummy tuck when I get to my goal weight, as a reward and a finalization of my new life.

However genetically I have thin skin. My cousin who was 240 and 5'3 has thick skin. She has no stretch marks on her arms (though her belly is very stretched out from pregnancy and the weight... she stores most of her fat in her stomach... she needs atkins really bad but thats another issue :/).

This is a YMMV thing. Though it is unrealistic to expect skin like a 20 year old who was always thin, individual variance in loss of elasticity and stretch marks is wide.
From my personal experience it seems to me concentration and severity of strech marks are the best indicators of loss of elasticity. SO if you only have a few in any area, odds are you haven't lost much elasticity and won't need surgery.