Your current stock would certainly limit the amount and type of cichlids you could have but there are still plenty of options, what numbers of each do you already have?
1 Severum
1 Blue acara
4 red head tapajos (geophagus)
4 Angels
6 Rainbow fish
1 BGK
4 plecs
4 Reedfish
I have:
2 Angels
7 Rainbows
4 Reeds
1 BGK
4 Plecs