OK, I gave in. I found a really great price on a 160W LED unit.
It's the G2 16) on this page:
http://www.fish-street.com/product_print.php?item_id=454
There are 2 30-Watt white bulbs (about 20K)
14 3-Watt white bulbs (about 10K)
14 3-Watt blue (420nm)
4 1-Watt violet moon lights.
Each color bank (and the big whites) are independently programmable.
I've got the plans drawn up for a solid glass top. Going Monday to have that made.
The unit should be here on Tuesday. From the pictures I've seen (on other forums), it is epically bright. I'm planning on running it without the 30W whites for several weeks, the turning them on, just for a while at first, then building up time.
I'm also planning on adding a few more SPSs in prominent locations.
Full report forthcoming.