You do mention it (Broon's Bane) as you said, so you could just leave it as is. And this is your list so it should be the way you want it.
However, if it were up to me, I'd list Exit Stage Left as an album and list only Broon's Bane under that album listing, as the rest of the album contains previous Rush compositions.
Either way-great job on this list! Very detailed. It's fun to analyze.