So that all sounds fantastic, but as someone who has spent a healthy amount of time on forest roads in the Cascades and did a multi-day trip in Idaho - all of my trips doing almost exclusively dispersed camping - it’s not going to be super easy to find room to park everything you have listed out.
Large enough dispersed sites definitely exist, but with a 30 foot travel trailer you’re going to be limited in how off pavement you can take it. Forest roads get narrow and the best spots are at dead ends. And the more accessible sites, at lower elevations, fill up fast. And of course the dispersed sites large enough for that much equipment aren’t super plentiful to begin with.
On top of that, you were already limiting yourself further by considering a dually truck. Once again, a combo that will limit how far you want to take it off pavement (I know you’ve gone back towards Tremor, but it shows the compromises you consider within reason).
So I guess that’s why I asked the question I originally did. Once you account for all the space taken up by a Tremor, bumper pull camper, Jeep, and SxS trailer I wonder if you would take up less space with either a motor home or fifth wheel with garage, therefore giving you more flexibility.
Worth remembering that a fifth wheel can be longer than a bumper pull and still result in the same rig length because some of the trailer is over the truck.
(For context, I’m ultimately going to put a slide-in camper in the bed of my Tremor for back-roads exploring so I don’t need to worry about navigating a trailer on forest roads. It will be a smaller, lighter one, so that I can get far off pavement to find the good dispersed sites.)