Your grains sound fine. However, be prepared for a lower efficiency than you are used to. I drop my efficency 10% on real big beers like this. So, you probably won't be hitting 1.135 OG... which is just fine.
If you really want to go IIPA on this, I agree with SkeeOrDye11 .. you really want more hops to balance out this rich beer. Also, if you want a lot of hop aroma/flavor, you'll need a lot more late kettle additions, and probably some dry-hops too.
Yeast health & a strong fermentation will be key to a big beer. If you don't make a large starter, you will want to pitch 3-4 vials of WLP001. And they will need a lot of O2. I highly reccomend using an airstone and aerate the wort well!
I'd also plan 2 extra weeks after fermentaiton stops, to let the yeasties clean up after themselves. That is a lot of wort to process, and there will be a lot of byproducts that, given time, they will clean up on their own.
Lastly, you may want to lower your planned mash temp. The brewing software packages are not very good at estimating FG. If you finish at 1.031, the beer may be too sweet or heavy. You'll have plenty of body just in trying to get the yeast attenuation up in the 80%'s. So, if you mash at 148-150, you'll be able to get down into the 1.020's for your FG..
Just a few thoughts! Good luck!
--LexusChris