Make sure that you drive it on a highway, where you can stay at 60mph or over for a few minutes. It it feels like it wants to wander (not track straight), have the dealer check the tire pressure (we run 75 in the front and 80 in the rear), and if necessary, make an alignment part of the deal. You'll see many posts here on the forums regarding the proper alignment specifications.
You should fine with that size rig, just keep in mind the rear end swing when pulling away form something, while turning. The motorhome pivots on the rear wheels when turning, and the distance between rear wheels and the rear bumper is what will swing out (like when leaving a gas pump). After a while, you don't even think about it, you automatically allow the extra clearance.
It's a great feeling knowing that you always have a clean restroom about 12 feet behind where you are sitting! :-)
If you do buy, make sure that you to pick it up early in the day, to leave plenty of time for the Pre-delivery inspection (PDI). Make them show you EVERYTHING, and make good notes. Small issues can be taken care of right there.
Things like the air conditioner, hot water heater, furnace, generator, water pump, toilet, shower (inside and outside), awning, TV antenna and TV, slides, power steps, etc. should all be working and demonstrated. Wear old jeans and bring a flashlight... look under the unit for water system leaks, loose wires, rust on the frame and anything that might be pinched or rubbing.
Have fun and be safe!
2016 Redhawk 26XD
Me, Dear Wife,
2 Bluetick Hounds
1 Newfoundland / Black Lab Mix
1 Cairn Terrier