Though I don't have any direct answers for you, I will offer a few thoughts...
First, think of it as "experience building" rather than hour building. Hours are just numbers, it's the experience you want.
When you find someone to fly with, work out the cockpit roles in advance; who's PIC (which may be based upon who is insured to fly the plane), who's actually flying (is the other person entitled to allow the other to fly?). Typically, if something goes wrong, it's the responsibility of the PIC, and... the PIC themself does not have the benefit of being insured in the case that they are injured (they are not a "passenger" and as such, not covered under passenger liability).
So, certainly find someone with whom to build experience! And, know that as a newer pilot, you can gain a lot of valuable experience while not actually flying the plane, but being closely involved with the flight. Flight planning, weather planning, nav tracking and radio work are all very valuable learning points which do not involve actually flying. On many of my ferry flights with a second pilot, I was actually happy to have them fly while I concentrated on some of these other important aspects of flying. Even if you are active right seat pilot not flying in an advanced type to which you would not normally have access (you went for the ride), there's lots to learn!
Good luck with your experience building!