Can't really add much to what has been put out there.  My initial thought is that since you already have the truck then stick with a manageable fifth wheel for now, especially since you don't have unlimited financial resources. 
An exit plan is a nice option, but it usually involves having extra money.  If you are going to have to be stationary for the first 6 months to a year be selective on what CG you pick for that long of a stay.  You could end up with an opportunity to build up additional savings before actually hitting the road.
Good luck brother (fellow Vet)