Which 2 champs should I cut out?

I’ve been playing for a bit, and I have 5 champs I love to death. Don’t really see myself playing any other champion for a while. Only issue is they’re all pretty different. They’re all also considered one trick champion, requiring lots of time into the champ to actually be good. I’ve put most of my mastery points into hecarim, but I need to cut at least 2 of these champs out and I can’t decide.

Hecarim Rengar Shaco Khazix Graves

Which 2 should I kick out?