I started out the same way 5 years ago, but now I spend all my time boating if there is water within a reasonable drive from home (reasonable depends on how many days I have off work).
I would recommend a demo program if you can find one. It can quickly give you an idea of what might work or definently won't work. Also, some instruction programs have multiple boat styles/models so you could learn and try out several boats. Personally, I tried different playboats for a while, couldnt get the hang of all the nuances, switched to a bigger creek/river runner and had great progression to harder rapids. Good luck and paddle safe!
Speak of Peace, (but carry a big gun)