It looks pretty good. I've never worked with cara-pils, but my guess is that you've got too much cara malt in there. I'd use about a pound total, tops. Maybe replace it with more Munich or something else if you want more interesting malts in there. If you want more body, just mash a few degrees higher.
As for the hops, it looks pretty standard for a IIPA. Can't go wrong with Amarillo and Cascade, and Citra is awesome too. Simcoe isn't my favorite, but seems to be pretty popular in IIPA. Only thing I'd suggest is maybe moving those 30 and 45 to the last 20 minutes. From what I understand, you won't really be getting and lasting flavor from those hops, and you're just using them inefficiently for bittering. Try a 90 minute boil (to get rid of DMS, also) with enough hops to get most of your IBUs. Then do all the rest of the hops, as much as you can justify buying, in the last 20 minutes (20, 15, 10, 5, flameout) if you want that kind of flavor.
Your recipe might be better than I give it credit for, and it does look good. I'm just not familiar with the cara-pils, not a huge fan of cara malts anyways, and prefer late addition hops in my ridiculous IPAs.
Edit: while I was typing this, Yooper said basically the same things!