I don't fear 2o-25% corn. With 6 row it cuts the protein and lightens the grainy 6 row flavor. I haven't done one with 2 row yet, but 2 row has much more DP than it used to, so it should work just fine.
The Cluster hops at bittering add an old school flavor that makes me think of the sips of dad's and grandps's beers I had when a kid. That was back when the mainstream beers had some hops and flavor.
I agree, I like corn over rice by a long shot. Think corn bread vs. regular bread. There's a sweetness and grainy flavor that is really clean and refreshing, particularly on a hot summer day.