Ha ha, to me riding in Florida is just as depleting as riding in the hill country because you hardly EVER get a break from the wind! It's nearly impossible to do a low intensity ride!
Bottom line: do what works best for you, and experiment to find out what that is. I learned last summer that I do MUCH better on the afternoon hill rides if I have a big bowl of brown rice about 3-4 hours before the ride. Obviously that's not an option on morning rides though.
Speed comes from what you put behind you. - Judi Ketteler