hey, i didnt add the VHO's into the aquaspacelight, i bought 2 48 inch VHO's and ballast from hellolights.com and hooked them up on my tank, so the aquaspacelight hangs from the roof, and the VHO's are mounted right above the tank, it looks great, since the VHO's have their own reflector in the bulb, i just balanced them on top of the tank, this would work for you as well, however your tank seems quite wide, so you may need a few VHO's, and it wouldnt look as good either, the VHO's would block a lot of your viewing room.
for your scenario, i would consider maybe adding 1 or 2 Radium pendants and see if that 20,000k halide gives you a better coloration. and that way it wouldnt block your view either