Looking around for more info on whether higher elevation is protective against sinkholes here in FL, I read this article from FL Geological Survey, with this excerpt:
"....In general, areas of the state where limestone is close to surface, or areas with deeper limestone but with a conducive configuration of water table elevation, stratigraphy, and aquifer characteristics have increased sinkhole activity....."
The
entire article is instructive:
Facts about sinkholes in Florida - WFLA News Channel 8