I'm on my netbook, and not great with "grams" and "KGs", so it looks ok without knowing for sure how many grams are in an ounce. I would definitely cut the 60 minute hops, as you don't need that many for bittering. I'd use 1.5 ounces (no idea how many grams) total at 60 minutes.
There isn't any way to have 200+ IBUs, by the way. Sure it calculates to that, but you can't get that many hops oils into suspension (about 100 IBUs is the max) plus the human tongue can't discern anything above about 100 IBUs.