Charleston would be a nice place to host, though I'd err towards Savannah owing to way more hotels (of generally better quality, too, I think), though surely Charleston has way more people who'd probably be interested in Pagodas.
I'd advocate for Winter Park in FL, too, contiguous to Orlando. Or can I plug Vero Beach...? There are like 5 other pagoda owners here who aren't in the club, I think, but I do see these cars driving about (all in Indian River Shores). Vero has a neat history of SCCA rallies back in the late 40s through the 50s, usually being the turnaround point for road rallies leaving from Miami. I can upload some pics later. There was also the predecessor of the Sebring endurance race here, which was held at the airport. Ocean Drive would be a super place to park some cars, and there are plenty of fine quality hotels that are relatively inexpensive. Superb winter weather, too.