Senegals are only 12-14 I heard. Albinos get even shorter.I want you to seriously think about this question. A senegal bichir will get 18-20" long.... pheasant killiefish gets around 4" long.......
Also many people have kept senegals and congos no problemSenegals have the capability to eat probably everything in your planned stocking. So yes, it will likely get eaten.
Completely different requirements.
Yeah I think 2 female jewel cichlids will do.Completely different requirements.
There are dozens of african tetras:
Alestidae - Wikipedia
And african barbs:
Enteromius - Wikipedia
Many are hard to come by, though because of prolonged civil wars and unrest and pandemic related problems. Anything smaller than 8-10cm is out automatically.
Bichirs are the same as any other fish: If it fits in their mouth they will try to eat it, even if that means to eventually choke on it. So besides Synodontis catfish (not the Malawi/tanganyika species!), Bush fish, sizeable Hemichromis cichlids and African Butterfly Fish there is not much you can definitely house with bichirs long term. Edit: At least not without entering monster fish territory.