A single ram needs a minimum of 10g, and double-tripple that for a pair... and the other option would also be overcrowded and you'd have some issues with compatibility.
How about a few dwarf croaking gouramis, a small school (5 individuals) of dwarf corydoras, and a couple otos?
How about a few dwarf croaking gouramis, a small school (5 individuals) of dwarf corydoras, and a couple otos?