You're going to be learning new mechanics of a roll, and you'll be swimming in current. There is a huge difference in comfort and dexterity between and wet suit and a dry suit. If you can swing it, it's a purchase you'll never regret or feel like you've progressed out of that piece of gear. If you get into the sport, you will
go though boats like napkins- it's the nature of the addiction
Ah- just realized that you're out east. Dry suit not nearly as necessary, unless you're out here a lot. Maybe wait for it.