ahhh plants... haha i was going to say.. 50 rams youll need a 100+ gallon tank.
I think the number you currently have is great. They will love the plants.. As I am sure you know they spend most of the time at the bottom part of the tank. Any plants you can create overhangs or through scaping with they willllll love.. and probably fight for. A pecking order will form (im sure it already has)
-Just another day in paradise-