Your math is different then mine.
Here's
my math (screenshot below), which is crazy optimistic in every way, except for the non-overclocked, exactly as-specced hashrate. How does yours differ?
I am even by December
That's roughly consistent with my screenshot above. And it barely grows past that.
If I actually take delivery, I estimate I might get it in late Oct / early Nov. I'm postulating that since it looks like I won't even break even, that I should request a refund--and I'm here looking for second opinions.

Do you realize that by April you have the network at 120PH, May 240PH, June 480PH, July 960PH? This growth is unsustainable. The biggest gun out there at the moment is 2TH. It'd take 60k of them in April or 2000 a day. 120K of them in May or 4000 a day. 240K of them in June or 8000 a day. See where this is going?