Lots off good advice here.
Don't confuse the model number with the length. Mine is a 28A which many would think is 28' long. WRONG. It seems the coach is about 28' long, but the overall length is about 31'. Take your tape measure with you.
If you are thinking of using the over cab bed, be sure to try getting in and out of it, then try imagining what it would be like in the dark with 2 of you in the bed. That's what made us get a rear queen bed. Maybe you are more agile than DW and I.
Mine is a Chevy. It gets about 9 mpg towing a car. Most Fords reportedly get about 8 mpg.