You're going to get loads of people coming back recommending the major JAR schools in Florida as places to hour build.
I am sure some of them are fine (I did my CPL at EFT and it was OK) but as an hour builder there you're never going to be given priority. I saw hour builders at these sorts of schools sitting around waiting for aircraft and getting bumped in favour of (higher margin) training flights. Utilisation tends to be high.
My advice would be to go to a number of busy GA fields in one particular area and find a good, clean professional flying school with lots of good aircraft sitting around not being used. They are more likely to want your business and more likely to cut you a deal.
I have used the following and found them to be good:
Ahart Aviation, Livermore CA
Mazzei Flying Service, Fresno CA
Also, think about California as a place to fly. Florida is very flat and boring.
All the best
Hufty.