Cave Excursions is definitely the place to call home while you're training in the area. Bill Rennaker is a great instructor, and still does a fair amount of exploration diving. He's been in just about every cave in Florida - and he's the guy to ask if you want to know about one of those out of the way caves, or sidemount.
I'll also have to second a couple other recommendations.
Wendy recommended Jill Heinerth. I did some of my training with Paul Heinerth, and Jill helped out for part of the course. Both are excellent instructors. They both do lots of exploration diving - most of it in Mexico caves. I'm pretty sure they both do SOME sidemount...but not as much as backmount or rebreather.
Izajane recommended James Hurley. James is the head of the exploration and survey for the NACD. He is currently qualified to teach Cavern and Intro to Cave through NSS, and all the way through Full Cave with NACD. He just needs to do the next "crossover" to NSS(to teach Apprentice and Full for NSS), which I think they only do once a year. James dives mostly sidemount, though would of course dive backmount while instructing. James has several exploration and survey projects going right now - see his website(
http://www.extendedrange.com) for specific info.
As for a place to stay....well, if you really want to camp, you could camp out near Telford Springs for free(but don't leave anything unattended there - break down camp each day), which is only a couple minute drive from Cave Excursions. You could also camp at Jim Hollis River Rendezvous, which is about 15-20 minutes away. Bill Rennaker has several mobile homes that he rents out - but unless you have at least two people, it's somewhat cost prohibitive(I think a minimum of $40 a night for the trailer, and I think that's for up to 4 people) - plus they are usually reserved far in advance. Call him for details on that. Cathy at the Dive Outpost rents beds out for, I think, $19 a night. There are several beds per room, so you may be sharing a room with up to 3 other people, or you may have it to yourself. There are two trailers, a cabin, and two rooms on the back of the dive shop with beds in 'em...probably around 20 beds total. Don't consider this place if you are allergic to animals. Be advised....Cathy is generally not happy if you stay with her but get your gas from Bill(generally half the cost), but I don't think she says anything about it to people anymore. If you have a couple people, you can also consider the Best Western motel up in Live Oak(20-25 minute drive from Luraville). Rennaker has a special rate with them - $45 a night including tax for up to 4 people. You have to get a card from Bill to get that rate. There are lots of places to eat in the vicinity of the hotel(even in the middle of the night) - whereas the others have limited dining nearby, and they all close fairly early.
Mike