it's all about how much blue your pallate can handle. some guys like radiums, others like 10k. some like 10k w/ A LOT of actinic. just look at the TOTM's they each have wonderful tanks. each has great lighting, but each do it in the way that it would look good to them. if i was doing the gb, i would buy 1 midday, 2 act+, 2 aqua, and 2 pure act. play w/ the configuration and see what YOU like. thats what matters anyway. no one sees your tank more then you...other then your fish. if it were me, i wouldnt rule out using 1 vho actinic, but thats me and what I like.
like i said, "HAVE FUN!!"