Most of the biplanes you mentioned have one drawback - you mention the occasional camping trp and taking the wife along; none of them have room for much more than your toothbrush. No problem when flying solo, but with two on board, you're traveling with the clothes on your back an and not much more.This is very true. In the Starduster if I fly alone I can get a reasonable duffle bag in the front seat, with two on board you have to use a small bag behind the pilot seat and another area in the headrest/turtledeck. Call it a total of 2 cubit feet.
With smaller people you probably won't have this problem, but at 250#, I quickly hit the rear CG with a passenger and anything in the rear luggage.