Tiffin motorhome?

Today we went to look at some Tiffin Allegro motorhomes. Before today, we were looking at a 34ft Allegro. But today...we found one that we like a whole lot better. Unfortunately, it's a good deal more expensive. It's a 37ft Allegro Bay and it sure is pretty. Of all the things we would like our coach to have, this one comes the closest. So do we buy now and take on an extra payment until we sell our house? or wait and risk it being sold and have to look for another one that we may not like as much? or suck it up, buy it, and break it in before we actually have to live in it fulltime, which may not be a bad thing. In fact, I think that would be pretty fun, but can we afford it. If we could sell the Jeep, which has been on the sale lot for 3 days, I think we could swing it. We'll see what works out.