Thanks for all the advice. By the way, I have looked at a lot of units, considering the size, floorplan, condition and this is the best TT floorplan to fit my son's and my privacy needs. We have a 2004 GMC Sierra 5.3 V8 Extended cab.
I realize this is a large unit and I do have concerns about pulling it, but also know I probably won't be buying another one anytime soon. So, we checked it out again yesterday and checked for leaks, awning, fridge, a/c, etc. Everything seems in working condition. Also, the dealership is going over it now doing maintenance on it.