Welcome. We have a 2012 Georgetown XL 378TS and also love the large living space with the two slides.
The only thing I can offer you to do is make sure the dealer shows you everything.
Make sure you have two set of keys for everything including the round key for the hood and the step battery storage area.
You need to make sure that the dealer aired up the tires to 90 psi as per the wall label. Then drive it down the highway and see how it steers.
It should be difficult to keep straight down the road.
If it is hard you need a frontend alignment which Forest River will pay for if you contact the dealer within the first 30 days.
Everyone does this even if it is a little off.
If you have a Ford Commercial Truck dealership close by they will do it being it is a Ford Chassis.
You will have issues in the first 6 months so be aware and plan to get it back to the dealer a few times. Hope they are close by.
Good luck and ask away any questions you may have.