Not that mine opinion changes anything, but I think Orlando would be the best choice. I say this for the one simple fact that it has a great central, well known, location. Holding it in tampa to do runs at a track 45 minutes away just doesnt sound appealing enough. BMP is a great track, but the extra drive is killer, and definately a decision changer to those people who have already spent their fair amount of time driving to florida(oh, and the guys down in Miami). And the fact that orlando (especially the O.C. area) is so well suited for large get-togethers and meetings, that event space and accomidations would be a peice-of cake. Not to mention OSW and the strip are close-by and well-known, adding to the appeling factor of Orlando.
And If it makes any difference, I'd be more than willing to house some of my fellow poor nissan drivers!

I live like 5min away from the convention center...
This idea is looking awesome considering it is in its early stages. If we can keep this thing as organized as it is now, I see no way of this falling through. Good Luck, I hope this can be pulled off!