You'd think with the weather being so nice that I would have been busy working on the conversion. Alas, this is not the case.
Oh, well, here's an update: The roof deck access hatch got another small upgrade today. I installed a set of heavy duty brackets to hold the lid open when I'm on the roof. They are rated to hold something like 100 pounds each and came as a matched pair. Very sturdy.
When opened, they lock into position and can't be closed unless I push a little button on each bracket. I wanted to be absolutely sure there was no way this heavy lid would close on its own. (For the record, that little gap in the weatherstripping is starting to drive me nuts, even though I know it will make no difference in the weatherproofness of the hatch. It's just an aesthetic aberration that I hate.)
Before the weather gets too cold to work outside (it's either too hot or too cold for most of the year in central Florida), I think I'm going to finish the roof deck. Then I can work on the interior with a heater and not freeze my butt off.