Yeah, that crazy dream ain’t just in your head! Others have the same dream!
You’re over halfway there with the truck. And with that truck, there really isn’t a TC on the market it won’t handle, either stock for lighter units or with some mods like you’re thinking for the big boys.
If you’re not ready to take the big plunge yet, why not get an older camper and get after some campin part time as your work/life allows.
Anywhere from a few to 10 grand will get a very nice and serviceable older used camper.
And wait on suspension until you know what you’ll be hauling. Your truck will get most all campers “home” without any help then you can do what is needed for the specific weight, if anything.
Have fun!