For long range, Manatee is your best bet. It is pretty much the only range in the entire area where you can shoot those distances. I say that, because I'm not sure if there are any others, but I haven't heard of any - so I doubt they exist.
Wyoming is a nice range. Nice benches, bags, rests...good facility. One of the best in my opinion --- BUT, and this is a big but - there is no rapid fire allowed. You cannot even load a centerfire autoloader more than 1 round at a time. Only guns you can load up the mags on are pistols and rimfire rifles. 100 yards max.
Hernando is cool. They are much more friendly to the military-style rifle rapid fire thing over there. That's the place to go if you want to blast away with an AK or an AR or whatever you enjoy. Rapid fire is practically encouraged (just keep your muzzle on target). 200 yards max.
Each of these are a bit away from you. In Lakeland there is the Lakeland club, then there is Tenoroc, but that's 100yards IIRC. There's a 3rd range in Lakeland, can't remember the name, I think it is a private club though. Anyhow, there's 3 outdoor rifle ranges in that area that I know of.
Edited to add:
Hate to link another forum, but this is a great reference to ranges in Florida (huge list of them)--
http://www.ar15.com/forums/topic.html?b=8&f=10&t=412