Take a look at the Jackson Fun Series (I think you'd be in a Super but maybe a 4Fun) & the Liquid Logic CR's (probably the 250 for you). They are both great free-runners (play runners, etc.). It seems like most people I've talked to that have paddled both say the Funs are a little better for playboating than the CR's (which makes sense considering the two companies).
If you want more volume but less playability, look at the Heroes & Remixes from Jackson & Liquid. I've been in both of these and the Remix is a great boat but, personally, I prefer the Hero. It's seems to be able to play more but still has a lot of volume. (It's shorter too, which makes it easier to deal with off the water.) And I really like the uni-shock bulkhead (have it in my MegaRocker too). Not only does it give you protection if you advance to the point where you're doing drops in the boat, but it also allows you to adjust the bulkhead, easily, on the river. So you can keep it fairly tight while paddling hard stuff and then it move forward quickly and be able to relax your legs and flex your knees some. This is great for longer trips.
I've done a single night self support out of my SuperFun but it's not the easiest thing in the world. It takes super light weight/compact camp gear. But it can be done. I'm sure others here have done longer trips with that boat (or even smaller). The Heroes/Remixes definitely give more room for gear storage. You sacrifice playability but both are more forgiving to learn in than the free-runners.
You should decide whether you're the type of person that likes things to be easier while learning (river runners) or harder to start but possibly bigger payoffs for that work (free-runners).
But the best advice is to try and demo some boats to see what you like (from shops, friends, etc.) Try some different brands and styles if you can.
I was going to be vague but then I decided to do this other thing.