Looks pretty good! Just a couple of things I'd change, actually. The malt bill looks fine.
I'd be inclined to change a couple of the hops additions. IPAs are all about hops. With the columbus at 30 minutes, you get some bittering but no real flavor or hops notes. I'd have hop additions at 60 minutes (for the bittering- those are fine), and add hops at 15, 10, 5, 0 and dryhopping.
so I'd do this:
1.00 oz Summit [17.00 %] - Boil 60.0 min Hop 5 46.8 IBUs
1.00 oz Columbus 15 minutes
1.00 oz Centennial 10 minutes
1.00 0z Cascade/centennial/amarillo/simcoe/whatever- 5 minutes
1.00 oz Centennial [10.00 %] - Boil 1.0 min Hop 7 1.3 IBUs
1.00 oz Centennial Dry Hop