Going to look at a 2619

[Subman]

Let me start off by saying we have been intrigued by TM for several years. My wife found one for sale near by and we are thinking of taking a look at it. It's a 1997 model 2619. What should we look out for when we check it out? Also the place that has it says it doesn't have AC but in the pics it looks like a window unit is next to the stove. Was this an optional location? Also my tow vehicle, which is a full size truck, has a max towing cap of 3300 lbs. Will I be able to tow this unit without any trouble? The price on this one is also real reasonable, about the same as a popular of the Same age.
Sorry about all the ?s but I want to besure what to look for.
Thanks,
Mark