You guys are great. I posted in the Icecap forum and have received no replies whatsoever (so much for the help I thought I would be sure to get there).
Anyway, how about this for a potential solution to my problem. Perhaps I am looking for confirmation that I am thinking logically here.
Since actinic T5's are still in question, I could leave both my front and back VHO's as the URI actinics. I could then have four of the 80 watt T5 11k bulbs. Granted they would be staggered.
A few questions if this seems logical:
a) I would have a 430 ballast running the two URI VHO actinics. That leaves me with a 660 and a 430. Could I drive the four 80 watt 60" T5's with these two ballasts. Obviously I would want to overdrive the T5's.
b) Are the Icecap reflectors the 'cream of the crop' then as far as the T5's go? When I look around on the net, I see the Icecap reflectors list their width as 2.5 inches where others are 2" or so.
c) I'd be going from 960 watts of VHO to 640 watts of T5/VHO. Would I even be gaining anything in terms of brightness? I don't want to make a change just to say I'm using T5's if there won't be any differences.
Again, any help would be much appreciated. Here's a rudimentary drawing (somewhat to scale) of my current canopy with my suggested configuration: