Will medicare let me...

Maybe someone with medicare can shed some light. I currently have United Healthcare through my husband's work. I am disabled and qualify for Medicare 4/1/11. If I start the process now having UHC..meet with surgeon, all the pre-op stuff, etc..will medicare help pay for the actual surgery when that time comes? If the starting process is up to 6 months or possibly longer, I'd like to at least get started now. I've seen the seminar, filled out the pre qualifying forms, waiting on appt with surgeon,,haven't gotten a call yet? I've already called UHC and they will cover lapband 80% if I qualify,,bmi is 43, i have comorbidities and past 10+ years of all my weight documented by dr's and i have referral letters from 2 doctors and 2 other doctors willing to push it if I need them. I've heard medicare can make things difficult so I'm trying to decide if I shouldn't just wait till 4/1 to start any of this so I would have primary and secondary insurance. Without medicare it's still gonna cost about 3000.00 out of pocket costs. Just anxious to get this going!