I started off at 16st 3lb and I am 5ft 3in, mind you 1 stone of that was panic eating in the last 3 months waiting to save up for the band . I have lost about 2 stone and was banded on 10th April.
I think it is vital to talk to as many people as you can before having the op and read everything going. Bear in mind that people trying to sell the band to you, may leave out the negative things.
I don't regret it at all but it can be very difficult at times and it is a real learning curve. It is by no means an easy option, but having said that it works. But every bandster I have ever met has had days when you just wish you could rip the thing out.
PM me if you want to know more, mind you I am still learning myself.
Good luck
Trish