i hope you didnt order UPS you should have gone with fedex express anyways good choice, i got that mobo 90 USD on ebay used lol now its 135 it was actually 113 new during thanksgiving
You can mod that mobo to SLI if you want and when the Phys-x comes out i think it will be PCI-e x 16, right? Its just preparing you for the future when you might need that extra slot.