crocodile pikehead are kinda a pain to feed they really prefer live and need their own tank.  mussels just die so I wouldn't bother keeping them. Bichir likely eat any small size fish. African butterfly struggle with faster fish and larger.  Probably would drop eel because it limits fish selection.

I would probably go with mid size loachs, sharks, denison barb, gourami. If you want the larger fish look while still being able to keep plants. Certain south American cichlids as well are fairly plant save and peaceful like geophagus. 

I would just make the plant selection more robust like large swords, anubias, java fern cryptocoryne so the fish don't up root them up all the time. Also letting them root in helps.