Here's a pic I just snapped of some members and lurkers on this forum who just read this thread.
How long before the "I sent a PM" and "Give me more details" posts start?
BTW, as others have said, nothing wrong with going another direction, but at least test drive a Sprinter, if not a camper converted Sprinter, to make sure that would even work for you before unloading your SMB. Would hate to see you in the same situation just a few months down the line.
Another option might be for you to take it to Agile to swap out your existing 4WD for a TTB 4wd conversion.