So funny, I am also just starting up a 75 gallon. Hubby wanted a custom cabinet so I'm waiting for it to be finished, then I can buy my tank , planning a 30 gal sump. I'm thinking T5 lights either ATI sunpower or Geisemann Matrixx but haven't gotten much farther in my research than that. Hoping to eventually focus on soft and LPS, a few fish, anemones (way down the road of course) I'll be following both of your builds...