I have a small All Glass tank (16X8X10) which I am thinking of setting up as a nano. Is that a 5 or 10 gallon?

Besides 2 inches of substrate, PCs, a small powerhead, and some live rock, what else might I need to make it sucessful?

I haven't done a reef less than 29 gallons.

At this point, I am thinking of a BTA with two small true perculas with some low light soft corals and mushrooms.