I was 49 when I had my WLS. I had similar stats to yours. No - my skin didn't bounce totally back - it depends on where you carry most of it.
Expect your stomach skin NOT too - no matter how toned your muscles are, skin doesn't react the same way. You'll have a flap of skin hanging.. If you have one now, expect one after too.
BUT - I don't have any issues with my arms - they bounced back well. My thighs, well... when I was at my lowest they looked like shar-peis, I've put a few lbs back into them (not too happy about it) and they don't look nearly as bad.
My advice to you is to lose your weight, keep it off for 1-2 years, then consider PS. Let your body redistribute as it needs to (and believe me - it will!) If you get real low, allow time to see if you're going to have "bounce back" and see where it goes. A part of your body you HATED before, may not be so bad later.
It also depends on how long you've been carrying the weight. Some folks who haven't been obese for a long time, may still have some good skin elasticity, but it does depend on age, genetics.
HW-218/SW-208/CW-126/ Lowest Weight-121/Goal-125 - hit 8/23/09/Height-5'3"
Regain 30 lbs from 2012 to 2016 - got back on track and lost it. Took 8 months.
90+/- pounds lost BMI - 24 or so
Starting BMI between 35 and 40ish?
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