They will need afternoon shade for sure. Yellowgirl who used to live in the Orlando Area had an easy time with H. macrophylas (mopheads and lacecaps). I do not think she tried Annabelles, Paniculatas or Oakleaf Hydrangeas though). Annabelles might be ok (see http://santarosa.ifas.ufl.edu/documents/lg_hydrangea_pruning.pdf ) but few people have posted here so I can only assume that being native to north FL, they will do ok. Oakleaf hydrangeas are common in the Alabama, etc area and native to parts of north FL so you could try those too. Oakleaf hydrangeas tend to catch root rot if placed in poorly draining soils but sandy drains actually drain too well. Of course, the soil will need to be amended with organic compost. If sandy, plan on 50% more water than usual and 3-4" of mulch up to the drip line or further. They key will be too much sun. Perhaps keep them in the pot in the location that you are planning and move the pot if the leaves in direct contact with the sun turn all white-ish or yellowish (including the leaf veins). Browning of the leaf edges inwards will suggest that they need more water. Oh, and did I mention that they will need afternoon shade yet? Sun until 11am-ish or dappled sun or in full but bright shade. I am stressing that because I do not see nearby trees and am not sure how much shade they will get in that side. I have some on the north side of my home and they get a lot of shade in selected locations of the north side but not all. A few spots get too much sun in the summer so I have planted small ones so they will not grow in the sunlit areas. Due to the long growing season, NB could get large so look now -in the summer time- where is it shaded enough for a 5-6' wide shrub. If not, consider a hydrangea that is not as wide/tall. Also, do not be surprised if some do not go dormant until real late, as in Jan-Feb. I have had oakleaf hydrangeas that never went dormant in mild winters and around March or so, the old leaves were replaced with new leaves. As a result, I have to maintain the soil as evenly moist as possible including during the winter months (so plan to water them as in Spring during the winter months).

The house looks nice but remote (that is what I say when I do not see anything else but trees around it). ;0) Retiring to the panhandle? I had a coworker who lived in Georgia but went to the panhandle on his RV and spent oodles of time there close to the beach.