Led light questions

[onepoorreefer]

I have a 60x24x24 mix reef tank trying to decide which lights to use . 2 gen5 x30 pros or 3 of the gen5 x15 pros. Light are going to be in a canopy about 10 inches off the water. No center brace on the tank

 

[blaxsun]

Either 2x XR30 G5 Blues or 4x XR15 G5 Blues (5 will probably be overkill), and I'd be leaning more towards the 4x XR15s. I'd go with Blues over Pros, because they're the more sought after/desirable model. For comparison, I have 2x XR30 G5 Blues and 1x XR15 G5 Blue on my 71" tank.