Go for it, I say!
But, plan carefully.
In addition to all the financial stuff, spend a night or two on the lot at your dealer, in your trailer. Turn everything on and off, make sure things work properly and you know how to operate everything. Empty your tanks, too.
Might point yourself toward some Airstream rallies as you head out, as you will find lots of helpful folks there who can assist you in getting acclimated to your trailer and life on the road.
Good luck, and will look for you on the road.