I love rams! I have 3 German Blues in my tank right now. I even convinced my mom to get 4 for her 55 gal that she got at wally world like 5 years ago.
I love the Gold Rams as well, but I haven't had good luck with those.
I think that 55 would be awesome as a cichlid tank. Maybe ask Freshmike if he has any suggestions.
Good Luck
Tiff