According to
Webflyer's mileage calculator:
YHM-MCO - 1020 miles / 1640 km
YHM-TPA/PIE - 1060 miles / 1710 km
So the main tourist airports around Tampa/Orlando seem just out of range... but if a regional airline strategy considered other secondary airports, Gainesville and Daytona Beach could work:
YHM-GNV - 939 miles / 1510 km
YHM-DAB - 967 miles / 1560 km
I suspect GNV won't be high on the list, as it's not exactly a key tourist destination (although it's very close to my in-laws, so my family would be happy!
)
DAB, however, could be an interesting market for them to consider. Depends on how close to the max range they can commit to, I guess.