I think that if an opportunity like that had arose right before my surgery I would of jumped at the chance, the band is still hard work (well for me it is). You can always have the band after the show if it doesn't work out. Mind you I live in England and have no idea what it must be like waiting for insurance approval I had to pay to have my band put in, I imagine its probably like waiting on the NHS waiting list, aww honey only you can decide whats right for you but good luck with whatever you choose.
Helenxx.