Maybe have a look at something that has a few more edges such as a river runner rather than a full on creekboat. River runners are generally better to learn in as they are easier to roll and the edges allow you to learn to carve the boat and make eddies, where as you can bumble down most things with out any grace in a creekboat. Plus at the moment you probably want to stay away from places where you need a creekboat. You can still pack loads of gear into something like the Diesels, Zens, Mambas. Even an RPM/Axiom would be a great choice to kick it off.
End of the day best to have a sit in on and see how comfy it is. Alex is right, a boat that fits is generally the best one for the job.