Looks good overall. Are you planning on adding a few more 670's in the future for SLI? If not you could drop down to a regular ATX motherboard and smaller capacity power supply to save some cash. With the money saved you could get a 680 instead of the 670. Also for the SSD, I would go with:
Corsair Neutron GTX 240GB or an
Intel 520 240GB
Though the Force GT is still a great drive and you'd not really notice any difference.
Good luck with the build