If you don't mind an extra $30 or so, the Gigabyte X58A-UD3R motherboard is my favorite X58 board for LGA1366 chips, it has USB3.0 and SATA3 (6gb/s) support, more PCI Express x16 slots, and great overclocking tools. My friend just built a PC (pretty much the same as mine) but his X58A-UD3R was the v2 with an additional USB internal header and an updated BIOS. It costs $209 but I'd say the extra features are worth it. The 930 is a good processor, with the stock heatsink you should be able to overclock it to 3.2GHz or so, we overclocked my friend's build tonight, had it up to 3.4GHz but ended up stable at 3.25 on the stock cooler. On mine I have a Corsair H50 cooler and have it up to 4.1GHz stable.
The 5870 is an excellent graphics card, that RAM looks pretty awesome too. I think that power supply should work, Rosewill may not be the best brand but their products are usually solid, my Rosewill 500W power supply is a few years old now and is a great performer, runs 24/7 in my server and never a single issue.