I don't have three lazies, but I have three uchis, which is my favourite personality.
I say if you like lazies and want another, you should get one.
I have three lazies in Bespin. But I'm going to end up with four once I get Drago. Lazies and Jocks are my favorite male personalities so I don't mind having a lot of them.
I would totally have 3 lazies. They are the sweetest nicest guys I know