I would say get a Chauvet PC-08 DJ Lighting panel and save the trouble. I got one off the big auction site for $10. You can get new ones for $20.
Replace the socket in the wall with a GFI and plug them into it.
It will save A LOT of time, be 100% safe, and 100% easier. I built one electrical panel, and WONT be doing that again. Ive gotten very lucky with it, but im not pushing my luck any further.
Jasen