Check out Clermont, if you have the flexibility in your schedule. It is about 1 hour east of Tampa, 25 minutes west of Orlando. The Clermont roads have far less traffic as it is more of a rural area, especially on the west side. Believe it or not, there are some seriously steep little hills in Clermont, too. These roads host all of the Clermont tris, including the Great Floridian IM.
Check out
www.windermereroadies.com for maps and group ride information. You are more than welcome to join our group rides.
I do most of my riding in Clermont. I spend a lot of time on the east coast as well. Love AIA, but you generally have more traffic and its all long and straight. Clermont will give you more diversity. But then again, I do love the AIA ocean rides.
Enjoy.