If you stay with things like the sen you could do some cool stuff that alot don't have. Something like this
3 sens maybe 1 albino
Congo tetras or African red eye tetras these would need a head start and be grown out a bit.
African brown knife
Butterfly fish.
Use driftwood and plants like anubias and crypts maybe a fern or two.
From experience my sens are to small to eat a mostly grown tetra, and they didn't try. My dels did. Along with most of my other polys. I'm not saying its not a possibility it's just not probable.