For the most part, I like the grain bill. With the exception of the Dark Munich. One that seems like a good sized percentage and I am afraid the Dark Munich will be too intense for an IPA. I would dial it back to 10% of the Light Munich (8-10L), or just eliminate it. This beer is more about the hops, than the malt. You could increase the Midnight Wheat a few percentage points (up to 5%) to make up for the color difference. +/- adding to the mash vs. sparge vs. cold steeping. IMHO (and experience) it doesn't make a huge difference. Just for an example, Stone Sublimely Self Righteous grain bill is:
5% Carafa II
I tend to like my commercial and homebrew Black IPAs dank and piney. It seems to go well with the subtle roast character. For the most part your hop varietal selection is good. I have not been impressed with Calypso. If it were me, I would maybe sub that out for some CTZ or Simcoe if you have it available?
The othere thing is your hop amounts. 14g of each hop late in an IPA is nothing. I would double or even quadruple your Galaxy 10 minute addition and at the very least increase all of your 0 min additions to 28g-56g. The same should apply to your dry hop as well. When I dry hop my IPAs, I generally use 4-6oz/5 gallons.
Not a fan of the German Ale yeast for an IPA either, but that is just my opinion
Hope this helps!!!