Looks good! I don't think rummy noses would be a good fit for this tank. I would recommend a 30g tank if you want them. Perhaps some ember tetra would be nice as a schooling fish? I love my ember tetra. They may not look the best at the LFS, but after a month of having them (I know, a long time to get their color back) they have the brightest red EVER.
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"99% of the time, a fish tank with plants will fail. Once you start a dedicated planted tank with fish, then you begin to succeed." - Geniusdudekiran