Great looking fish and tank. I might suggest though, placing some more vallisneria spiralis plants along the left back wall with Heterantha zoster-i-folia and Aponogenton ulvaceus in the right corner of the back wall. Mid tank and foreground, maybe some Echinodorus amazonicus and E. quadricostatus. These are just some ideas I had I wanted to share with you. Might give you some ideas on how to complete your tank. Also too, a few red plants would go well in there also. I hope this helps.
~David
~David