More Questions..on 3023

We are purchasing a 2004, 3023. Does anyone know what the standard options were in that year? Any problems we should look for? We do know that is has a leaky roof vent, so we will be checking that out.
It is not at a Trailmanor dealer and it is being sold "as is." We have to travel 500 miles to pick it up, is there anything we should do before towing? We have a 2007 Trail Blazer with tow pkg. Used TM's are hard to come by, so we don't mind traveling a bit.
Luckily we have a TM dealer a few miles from our home. Would you recommend that they look it over after purchase?

Thank You,
Marcie