You might want to consider a Shark catamaran, 20 foot long, 10 feet wide and folds for trailering (folding and unfolding only takes a few minutes). It has a hard deck instead of a trampoline, so it would be great for a boom-over tent. And it has storage compartments at the forward end of the deck. You could probably mount a small outboard on the back, but it is quite fast sailing in light air.

Another option, although smaller, might be the Isotope. It has huge storage compartments in the hulls and is an excellent light-air boat.

Both boats have simple rigging and are easily singlehanded.