for your spare check ou the hitch gate, or hitchrack, same company, they make a swing out that goes in your receiver. They are way expensive but not that hard to reverse engineer. I made one for my daughter's scout 800 that works, not quite as elegant and much heavier than it needs to be but also not that difficult to make a functional clone. I bought material to build one for my scrambler for longer trips but I probably wont build it since I put the spare back on the roll bar.
I hope you get the RTT mounted up and slept in, I've been intrigued, and looked at several at SEMA last year and Moab this year but with a fairly flexy jeep on 35s I wonder about sway while up there, especially in high winds. Be interested in your impressions.
Be careful on the next deployment, we'll be thinking of you