I switched last year from a 100 gal (21" high)tank to a 150 gal (27" high)(viewable from all sides) and went from a no-name 4x80W T5 fixture to an 6x80W ATI Sunpower. Since then I've had to place most of the LPS and Soft corals on the bottom of the tank, and even the RBTA's have moved to the bottom and have never fully extended.
I'm thinking of staggering my lights as described below to still get the dusk to dawn affect and continue to use all 6 lamps, since I have been experimenting with a few SPS frags lately
Here is the scenario I plan to set up with my Apex controller, see if you see any holes.
I do not see any major issues with it however for color prefernece I would personaly want 2 Coral Plus bulbs. The other thing is why are you turning off bulbs rather than just adding more to increase the total lighting? Yes it will work as your slightly shifting the spectrum but would it not be simpler to go the route like
pre dawn + blue plus + Atinic
Dawn +Atinic + Coral Plus
Midday + Blue Plus + Coral Plus
Dusk - Blue Plus - Coral Plus
Post Dusk - Atinic - Coral Plus
Night - blue plus - Atinic
Another idea as long as your using 2 Atinic whuy not use them on the predawn and post dusk phase alone? It would be close to my 454 LED's at predawn and Post Dusk with maximium Florescense.