Check out local clubs and quarries. We were part of DUI Dog days for less than $15 we were able to dive in all the DUI drysuits we wanted for a day and then they provided coupons for $200 off a purchase. (Keeping in mind that these suits are at the high end) A few weeks later at the same quarry they had White dry suits there doing something similar. If all else fails your local shop may offer a Drysuit experiance in a pool. (This is how I changed my mind) With the drysuit I have been able to dive year round and I am North of you- near Syracuse NY) I like being in a wetsuit in asmuch as I feel more part of the enviroment, but the diving during the winter monthes can be awe inspiring as fresh water vis can be as much 60' or better in some of our lakes. Minimual boat traffic and no alge blooms to destroy the viz.

Don't rule one out completly, because the minute you get drysuit certified you will again kick yourself for not doing this sooner! Ofcourse drysuit diving is not for everyone and thats okay too.