For the cost I like that fixture. you get allot out of it for the money. All your other equipment looks like it should make for a pretty solid system. The only issue I see is using vortechs. After hearing about how a vortech melted 1"+thick acrylic on a locals very large display and poor customer service that followed I wouldn't recommend them (correct me if i'm wrong on this info anyone). If you are set on going with powerheads over going closed loop then I would say koralias or tunze's (tunze's preferred). Having been someone that used powerheads for years and now gone closed loop on my latest tank I dont think i'll be going back to powerheads on any future display tanks.
Tom
Picked Me up 2 Tunze 6100's and a 7095 controller last week!