22" deep 13" wide 46" long lighting

So I have a tank that will have 2-3" sand water level receded 1/2"
22"-(3+1/2") 18" deep lighting is needed

I'm looking for suggestions on lighting for this tank.
One thing is that I want one side better lit than the others for diff corals.
I was thinking 150w mh for one side and 175-200w mh on the other.
I have a coralife 150w mh that I was thinking about building a diy pendant ot of. But as far as the other light I have no idea. Even if the 150w mh would be good at all??

Does any one have any experiance with the icecap 150w mh ballast???
How hard is it to wire all together??? And or is it better to buy fully assembled?? I'm good with electronics just reluctant to start before I know the facts.