The OP is looking at 360w of LED so I'm thinking you idea might not work for very long!
3rd comment.......What options is there to control x 24 (10-15w) led's ??
24 x 10 = 240, so the Zano is an option?!
He could go crazy and even add another lamp lol
They do a two gang version so you can fit 500W of LED dimming on the plate although obviously not the ideal solution as you would have 2 circuits.