I'd spread out the hop additions to add a bit of depth and complexity to the hop profile. Maybe something like this:
1 oz. Centennial @ 60 min.
1 oz. Centennial @ 30 min.
1 oz. Centennial @ 20 min.
1 oz. Centennial @ 5 min.
1 oz. Centennial @ Flameout
1 oz. Cascade dry-hop
Your existing hop schedule would result in a beer with very little hop flavor but a ton of bitterness and aroma. This hop schedule would make for a smooth bitterness and improved hop flavor and aroma with the same amount of hops. Just an opinion from a hophead.
