Omit the Front Page when Using Contextual Filters?
First : NEVER enter data twice. You're sure you'll regret it sooner or later, and it's always the sign something's wrong with the design.

As for your problem, you could probably set up a Views Attachment or a plain other view to add nodes with different criteria. 

Or perhaps you could use Flag or another module of that kind to differenciate your nodes more precisely ?