Realistic weight loss goals

What is a realistic wieght goal post WLS??  I am currently 285 lbs and am not sur where a realistic goal should be set.  My docs say a realistic expectation of loss is about 70% of my excess body fat.  That being said my healthy guidline for wieght means \i should lose up to 150 lbs. 70% of that would be about 100 pounds or so.  So I should aim and expect a goal weight of 185 with excess skin? Is it reasonable to want to weigh 140 lbs? Am I being extreme?  Oh man now I have a whole new host of questions LOL.

Whether 140 is reasonable will depend on your height, how much extra skin you retain, and a host of other factors.

I'd start with the 70% goal provided by your surgeon, see how you look/feel there, and decide going forward.