When I saw the show, I sat in the 400s, row F, right near the aisle to which you were referring. I had a great view, and while there were a few awkward sight lines, I was able to see most of the show clearly, especially "Get Me to the Church on Time." If you really want to sit in the 500s, I'd suggest row F.
"I think that when a movie says it was 'based on a true story,' oh, it happened - just with uglier people." - Peanut Walker, Shucked