That's what got us into trouble the fist time. The cost for a larger trailer isn't much more expensive, so we ended up buying a Keystone Sprinter that was a 27' foot box and 30' feet from bumper to hitch. While it was nice and roomy, it also limited (restricted) many places we wanted to go in the backcountry. The 22G is a little bigger than I want, but overall, it's a nice sized trailer.
Have you looked into a cabover truck camper for better maneuverability? Or a 4x4
B van like the SportsMobile? Having owned three cabover campers and one 30 foot TT, if maneuverability is important the cabover is far better. So far I have been able to get the TT into anyplace I want but not much off road stuff.