if u intend to keep angels, go for bigger tank.
I tried keep a fowlr n a nano sps tank. end up decom the sps tank.
go with your heart, are u sps or fish person? right from the beginning, i love fishes more than corals. for me, i will be happy spending 1 hr feeding my fishes, looking at them, rather than doing dosing n measurement of water perimeters for my corals