I love my little tanganyikan cichlids in my 29. Do some research and find out which ones are avaliable to you. The julies (julidocromis) are a lot of fun...so are the brichardis. Only thing I think I'd change if I was starting that tank over would be that I'd probably have made it a species tank, with a bristlenose and maybe one comp or other loner fish that can handle itself. Their behavior is so much different than watching a typical community tank, I could just watch them forever. Oh and the reason I say that lake, a lot of them stay smaller (under the 5 inch range) and many grow very slowly.
I think we all go through those phases...I kinda did it with guppies, now I have a tankful that I will give to anyone who comes by "hey you want some guppies?" lol no one seems to want them...so maybe I'll pawn them off on the roomie.