We use the Olympian catalytic heaters also, and have for 4 years of wintering in the trailer. We're religious about ventilation, going well beyond the manufacturers recommendation. We use a propane detector (low), CO detector (mid) and smoke detector (high). You will find a lot of scary comments on the web about catalytic heaters. Being over cautious, we haven't had an issue.
Being in a humid environment, remember that the exhaust from these units goes right into your Airstream. Burning propane produces a lot of H2O. We head to the desert SouthWest for winter, so the extra moisture is welcome. Not so sure about Florida -- your travels will dictate whether this is the right choice.
Unless you travel far north, the Wave 8 might be a little much. We used a 6 in a 17' Caravel
and found it more than adequate -- but a bit too concentrated. We have installed 2 Wave 3's in our 26' Overlander and have been fine down to 28 degrees. Much below that, we're in a hotel.