Does it have enough storage for extended camping trips?
Yup. But not as much space as the Adventure. It depends on what you mean by "extended" and even then, it depends on how comfortable you want to be.
The Revolution sits quite flat to the water compared to the Adventure, so it has less of that "play" that I talked about in my earlier post. That might be better for fishing, but that's a personal decision.
As a kayak, I really prefer the Adventure, I think it gets overlooked because people think it's too long for their needs, but in most cases, an extra few feet doesn't make a difference on the roof of the car, in a garage, or even in the water. Having said that, my wife LOVED her Revolution, and didn't like my Adventure as much.
As always, if there's any chance that you can get out and try these boats on the water, that's the best thing to do. I might prefer the Adventure, you might prefer the Revolution, someone else is going to prefer the Outback, and someone else a paddling kayak. There's no wrong answer, every boat is a compromise in some way. It's up to the end user to decide which compromises matter the most.
For me, theres nothing the Adventure can't do on the water, that the other boats can do. I'd sacrifice a little bit of that rock solid stability of the other boats, to get the speed, efficiency and storage space of the Adventure. (but that's me) The Adventure feels like the sports car of the line-up.
Even length, there's a pretty narrow window in which a Revolution CAN make a U-Turn and the Adventure cannot. When my wife and I went out, she'd be in her Revolution with a standard rudder, and I'd be in my Adventure with the larger sailing rudder. There was never an instance that she could U-turn, and I couldn't. We either both had to pull out our paddles to spin around, or we could both make the turn.
There's no wrong answer, or wrong boat. It's all about you finding the boat that fits your needs the best. A Revolution is very similar to your Quest, but the back end is more rounded than the Quest to allow the rudder to be more effective in steering. (The mirage drive boats have less of a sharp keel in the back end) So you'll find that the straight tracking of the non mirage drive boats, will be a little bit less accurate with the rudder up on the mirage drive boats. Not a huge problem, but something to consider.