Thank you
I used 80% sugar fine aragonite sand and 20% live sand that you can get bagged at the LFS.
You should have 1 - 1.5 lbs of rock per gal of water. I have about 1lb/gal. Remember that the rock displaces water so you total water volume will drop... good to know when you are dosing stuff.
As far as lighting.. a very rough estimate is 4-6 watts of light per gallon. There are other factors involved when choosing lights... depth of tank and the requirements of the corals you plan to keep. How deep is your tank?