Have you seen hostas growing successfully in your area? Hostas need a cold dormancy (about 40 days at or below 40*F...soil temp). Without that cold dormancy the plants get smaller and smaller until they die. I'm not sure Hostas are going to do very well for you
If you want to give it ago, the hybrids with Hosta plantaginea in them are going to be your best bet. H. plantaginea is native to sub-tropical China, so it is more tolerant of heat and warmer winters. It is also the only fragrant Hosta species, a trait most of its hybrids inherit!
Some to try:
Guacamole
Fragrant Bouquet
Fried Green Tomatoes
Fried Bananas
Fragrant Dream
Aphrodite
Venus
Holy Mole
Avocado
There are many more.