First off, like others have said, take it out for a test run. See what works and what doesn't and then move from there.
What kind of lift do you have, especially in the rear? You will eventually be carrying a lot of weight in the back and need coils that can handle it. Bumpers and a winch will add a good deal of weight as well.
If you want to go with a RTT, I would recommend getting a flat roof rack from either Gobi, baja rack or Prinsu. I have the baja rack flat utility rack and love it. Haven't mounted the RTT up there due to weather but I have the awning mounted and a 42" curved led bar. Planning to mount some flood lights on the rack.
There are some good options for a front bumper but less for a rear swing out. Some options for front are ARB, Damello, CBI and relentless fab. You should have some 2.5" coilovers to handle the added weight in the front. I've been talking to 4x4labs in Grass Valley about a rear dual swing out with a few custom touches. Other rear bumper options are CBI and Relentless Fab in Reno. Here's a link to armor option for the 4th gen,
http://www.toyota-4runner.org/4th-gen-t4rs/125636-4th-gen-armor-thread.html.
I'm in Truckee.