The blue HAF has cheaper shipping than the red one. However, switch it out for a HAF 922 and it will be under budget.
Also, just get a 5870.
With a HAF 922 it comes to a Grand Total:$1,707.43 - $40 for a MIR. And then he is good to go.
He doesn't really need a full tower case unless he wants to show off a lot. Anyways, the HAF 922 looks pretty good and has room for almost anything. Also, 2 5850 in crossfire will perform better then a single 5870, which is 1/3 more for a 20% (I think?) performance.