Ok, I understand you're needs better now.
I humbly submit the following for your consideration.
It is a lot easier to find 1 partner to boat with than 3 or 4....I had a 13 paddleboat, was lucky to fill it once a year !
Now my mini max, ..... man.....easy to get a GOOD r2 partner for that !
I use that boat 2-5 days a week in season !
Be realistic, how often will you need the room ? When I have that special need day now, I just rent a boat, with paddle gear for my guests.....for me this is easy to do....rafts and gear is readily available through nearby rental companies and outfitters.
Buy a R2 machine ! You will get a lot of use out of it, rent when you need the extra room.