I'm pretty confused lol. I am assuming you are talking about a standard 6 ft. 125 gallon tank.
3 150 Watt halides are fine for what you want to keep. LPS in the middle to the top preferrably. You can even do 2x 6 Bulb Tek lights (36 inch and 36 inch) and get away with that.
choose t5 lighting much better color more par just you won't get the shimmer look it !! stay with ati bulb or giesmann good luck post pic once you set it up!!