DIY LED's for 120g

[crussett]

Hello,

After having lots of problems with my MH/T5 fixture I'm thinking of switching to a DIY LED setup. What would be recommended for a tank that is 48"x24"x24"? I have SPS at about 12" and up and LPS and softies at 12" and lower. I looked at the 4' package, but it says it's recommended for tanks 18" to 20".

I was also wondering if anyone had recommendations for building a fixture around these DIY LED's.

Thanks!