Wow... Well all the best.
I would first urge you to consider doing some serious research on the band. How far out from surgery are these people who have been "successful" with their lap-bands and made it actual goal? Not just 50-60 Lbs or halfway there...
How many actual bandsters can you find that are more than say 5-8 years out and still "loving their band"? That's not really that long considering you will want to have your surgery forever, correct? Why would you go into a surgery with the thought that you might someday need to revise? I beg you to find at least a dozen, and speak with all of them directly too - not just them posting. Ask them the hard questions!
May I also remind you that a revision is much more complicated than just having the sleeve on a virgin stomach. You go through a lot more and your risk for complications are much greater.
I got a 10'000 loan from my bank and my payments are about 225.00 per month. Best loan I've ever gotten and let me tell you - I love my car!!!! A car is disposable though... I know it won't last forever. This time I wanted something permanent.
Regardless I will support anyone's decision, however knowing the lap band is not your ultimate first choice, I have to voice my true opinion.
Good luck!