I wouldn't get rid of any of the clowns either. I had a group of ten in my old 120 and rehomed 4 of them due to lack of space. Their behaviors definitely seemed to be more outgoing the more there are. Got a bigger tank and am now back up to ten. I don't know much of anything when it comes to your other fish. I'd say let your water parameters and tank maintenance be the judge of needing to remove stock or not. For me personally, if I had to do multiple water changes every week to keep everything healthy, I'd be looking at removing fish or upgrading the tank.