Boba Fett
El Cazador de Hombres
Boba - Are you at all concerned about the heat/intensity of those lights damaging the top row of figures? I've been thinking about doing your exact setup.
Actually, they do not get as hot as you think. Believe me, I was doing the test runs with my figures to see how warm they got and they turned out fine. If you positioned them just directly out of the lighting a bit, there's nothing to worry about.
Anyway, I plan to "rotate" my figures every month(taking the fourth shelf of figures and placing them on top, then shifting down the other figures a shelf down) for the sake of showing each collection in the lighting. As you will notice when lighting is placed, the fourth shelf of figures hardly get any light.