Correct breather for cast aluminum valve covers

This is my current setup.A9D2B654-CB37-4029-A595-84EFE10AEF6C.jpeg

When I went from 2 bbl to 4 bbl, I went to a 2 port breather because the 3rd line (can’t remember what it was for) was lost. I wanted to keep the fuel vent line and breather, and didn’t want the breather to spit gunk all over the cover, so I opted to plug it into the air cleaner.

With both covers having 2 holes, I don’t know what other options I could run besides permanently plugging one.