You're going to need another otto or two they like to be in groups. Didn't someone mention about not adding a shrimp with bettas and adding the same species of cories? I think you need to slow down and bring back everything you were told and then add the other fish you need like the ottos and more cories and female bettas, Then decide what to get after. I think someone mentioned that too. You are ignoring some peoples good advice! Good Luck