Wow thanks for the replies everyone!
It looks like the route I picked was reasonable and I've already reserved the a/c from Air Orlando, who have been very helpful.
Thanks especially for the tips about cheap(er) fuel in Marathon.
I think I'll rather talk to a few people and keep low to entertain the missus, who is coming along. I'm due to give a talk at the national weather service office and the guys have told me that the runway is built in completely the wrong direction with a permanent 90 deg crosswind, so I'll practice those x-wind landings before I head out.
Has anyone got any pictures to share?
Thanks again and I'll let you know how I get on.
Cheers,
Gareth.