Imperial Stout critique?

Imperial Stout

This is made with pretty much everything I have on hand. I don't really want to order anything else. Tell me why I shouldn't brew this.

3 gallon batch
OG: 1.090
FG: 1.023
IBU: 81
ABV: 8.6%
SRM: 33

Grains
8# two-row
.2# roasted barley
.2# Crystal 40L
.2# Crystal 60L
.3# Black patent
.5# rolled oats

Hops
1 oz. magnum 60 min.
.5 oz. EK Goldings 20 min.
.5 oz. Fuggle 20 min.
.5 oz. EK Goldings 5 min.
.5 oz. Fuggle 0 min.

Nottingham yeast

I think you'll be light on the roast for an Imperial Stout, otherwise it looks good to me.

That's all the roasted I have. Is there another way to get that? I have plenty of black patent. I could add more of that. Or can I toast/roast some two row? I also have some Munich. I really just don't have time to order more before I want to brew this.

It will taste fine as is, it just won't be as roasty as a RIS usually is. You can certainly up the black patent, it has a pretty similar flavor to black barley (just make sure you have enough carbonate in your water ~200 ppm to keep it from being acrid.)