AggieDad, first of all, let me say this is a great forum and you will learn a lot here. Our B+ is our very first RV, and I wish we would have known what to look for when buying. We had a lot of initial problems, which so far seem to have been worked out.
I would run "everything" at the dealers before you take it home, fridge,generator,furnace,air,etc. Make sure the radio and cd player work. Ours had to be replaced. Pull the drawers out in the kitchen area and check the supports. Ours are very flimsy and have had drawers fall out onto the floor while driving. Fixed the supports myself. If possible, have them run a hose over the RV and check for window or door leaks. We had leaks in both. If you have the dinette, drop it down to a bed. Our table would not fit between the bench seats, also fixed that myself. If you have a good dealer, he will be more than glad to go over things with you and may save you a few trips back.
We also have the 8.1 and it handles great. The size is comfortable for what we need.
Hope you have many good trips and few problems. Let us know how things work out for you.