175w halide decision help

[phi delt reefer]

looking for a 14-15k look. Really crisp white with some subtle blue and lots of pop (hence the t5's)

--so i can got with 4 t5s and two spider/parbolic reflectors and a dual 175w eballast

--go 2 t5s with two lumenarc mini (or similar style) pyramid reflectors and dual 175 eballast.

anyone have experience with blueline e-ballasts or Lumateks?

I like the versatility of having 4 t5's for i can tune the color with some different bulbs as needed.

next question - with the spider reflectors or the reef optix 3 units what kind of spread will i get if its only 8-12" above the water?

I am going to do a two or three island look with the rockwork so i can centre the reflectors respectively or put them on some rails so they have adjust-ability in case i change the rock work. I dont plan on having stuff right up to the edges of the glass, probably have 2-4" of dead space all the way around.