Alright, since no one has bitten, I'll bite. It really depends on the condition of your wood frame, 18 year old camper. Basically, your 945L is not worth the cash outlay to replace all the windows. Your best bet is to sell the 945L and buy a new, 4 season model of choice.
I have tried to keep up with my puny little Lance 165-s (no air conditioner needed), which has approaching no insulation and certainly no thermal pane windows, by upgrading relatively low cost items that would make a difference, like block foam insulation where applicable, 200W solar, new converter, battery, and all LED lighting plus a 2K Honda generator.
Since you live in FL, maybe just a Honda 2K for air conditioning (if you have the Cub A.C.) while in the boonies would help. But, no I don't think it's worth renovating all your windows. The only caveat is if you have a terrific TC craftsman near you who will work for a lower wage. Good luck with that.
jefe
At least you won't have to worry about thermal pane windows keeping the heat out in this kind of weather:
'01.5 Dodge 2500 4x4, CTD, Qcab, SB, NV5600, 241HD, 4.10's, Dana 70/TruTrac; Dana 80/ TruTrac, Spintec hub conversion, H.D. susp, 315/75R16's on 7.5" and 10" wide steel wheels, Vulcan big line, Warn M15K winch '98 Lance Lite 165s, 8' 6" X-cab, 200w Solar