Scroll down and expand the 4x4 usin 4ft strips link then scroll down n follow the Bridgelux EB2 build. Do everythin they sez cept use all angle alum insteada heatsinks (dont need heatsinks). Build 2x frames with 6 strips each mounted on angle alum w therm tape n screws if u think it needs.
Yer gonna have more light than u ever could need in that 4x4 fer $400 delivered.