Just FYI:
I picked up a Sun Polyp Combo from AC yesterday. They only came out in the dark last night, but a healthy dose of cyclopeeze in the water this evening made the polyps (both yellow and black) come out beautifully!
So... I'd go with the "feed them at a normal time" approach to getting them to open.... Plus, I have them off to the side, so they get "side light" but no direct light...