That's a very nice mix of fish you have. They should all co-exist well. Take enjoyment in your smaller tank. It's a nice sized system, easy to maintain and you can have a great set-up with conservative stocking. Large tanks are interesting in different ways, but never discount the smaller set-ups. I often wish I still had my old 56 gallon tank. While my 120 gives me a few more options as far as fish, the 56 was a great tank.