I'd like to steer you away from the red devil, you are severely limiting your stock list with this fish. sell it or trade it in.
An EBJD is okay, it will not be as aggressive as a regular JD and you may be able to put some cory cats as a cleanup crew in there. T
ry a senegal bichir, they are just the right size, eat the same kind of food and have tough skin to protect them from any aggression.
angelfish require a more peaceful community, as their long fins are susceptible to other fish nipping at them.
if you are interested in more of an oddball community, you can also try a black ghost knife fish, they will do fine with a bichir and an EBJD.
if you want a cichlid tank you can also add a blue acara, they are not highly aggressive and look almost as good as a green terror. a blood parrot would be okay too if you want some red coloration in the tank.
I would also steer you away from the common pleco, and suggest either the cory cats or smaller plecos such as the bristlenose, they are great cleaners.
lastly I'd just like to stress to you to think of the end result and dont buy any fish that would violently dominate your tank...
