Need some pre-purchase advice.

I hope I'm not breaking the forum rules here, but we are looking for a pop-up for our son to tow behind his SUV. He has a wife and two young girls 8 and 2. We are fifth wheel owners and like the idea of a hard sided unit for our son.

We live in Maryland and there is no Trail Manor dealer in our state, but I did notice one for sale on this forum in southern MD.

We are members of the Everest forum, so we know how helpful these forums can be for newbie's, and we are even pre-newbie's so we really need the advice!

We will probably buy used, and want something that will fit in his garage. So, the big general question list:

What should we look for?

What should we look out for?

Thanks in advance for all the help that I know will come from the members of this forum.

Just remember, travel is always spelled with an R and a V!