30 Gallon reef cube build 100% DIY

[Tigweldpro]

So my tank is built and looks great.
Working on the stand currently 32 x 24, 29" tall.

-Now yes or no for egg crate in the bottom of the tank?
-I went with the Sicce 1.5 instead of 2.0 will the flow from this pump be enough or should I be adding power heads?
-1 or 2 bubble traps in the sump? haven't added baffles yet but have lots of glass.
-1" of sand is good enough in tank?
-Sand, rock, rubble, bare bottom in refuge?

Little help would be nice from the senior reefers.....

Thanks