What about going for a colorful community? I'd go for 1 opaline gourami, 5 melanotaenia lacustris (turqoise/lake katubu rainbowfish) OR 5 boesmani rainbowfish (melanotaenia boesmani), 1 red tail black shark OR 1 rainbow shark OR 1 flying fox, 3 yo-yo loaches and a trio (1 male/2 females) of mollies OR swordtails. And that would be fully stocked, very colorful (the rainbowfish will be dull in the LFS but they'll color up in time) and balanced over-all with fish at all levels. Do a fishless cycle first (read through the link in my signature) and then add whichever of the livebearers you want to go for first. Use them to mature the tank for a couple of weeks - then start adding the other fish. Add the shark/flying fox last as it is the most territorial.