I decided to do 3 of the Kessil A150s they're 30 watts each so 90 watts of power and should be sufficient to cover my 72 x 24 x 24 tank while also not breaking the bank.
I will probably run my ATI light for now though until it is time to change bulbs then sell it. Sure a small section may not get a lot of light, but that is okay for now.