I'd check those floorboards and frame for severe rust issues too. That long snake looking thing is your secondary T-top seal and it's definitely seen better days. Got a feeling the main T-top seals are shot too. The console area has seen plenty of water due to the rust in the ashtray.
Again, if you're titling/registering it in Florida, you have to follow Florida DMV rules on bringing a car in from out of state as it were. Now, without the title in hand because it was a bill of sale only, how do you know it's a clear title? I'm always a little hesitant of those no title sales. Could turn out fine, could turn into a nightmare. Good luck with that. That should be your #1 job before doing any work to that car. Make sure you can get a title for it first.