Mid Mo's are great instruments... good choice...
I happened to see a used one for sale (an M2 listed as in near mint condition) on ebay at $375 (including case) and the seller is in St.Paul. Seems to me it'd be worth sending that seller a note to see if you could arrange to go and play it. Even though the auction is not yet over (so the price could go up) you might save yourself a bundle. The lifetime setup policy sounds good, but unless this is an unusual MidMo or you treat it carelessly, you probably won't need a whole lot of that. It's kind of like the extended warrantees offered by electronics stores...more often than not, it's not used. That's how it makes them money.
You can get used MidMos by watching ebay and the cafe classifieds.... they pop up fairly often... and they're pretty sturdy instruments. You can usually find them for $375-450 used.
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If you're gonna walk on thin ice, you might as well dance!