This looks great, its too bad I just finished building a Ivy bridge rig using a Z77 UD5H and a 3770K CPU. I would love a Hanswell rig but if memory servs right its best to wait for the "tick" to upgrade. Either way my Ivy Bridge rig will last me for the next 5 years, similar to how my Q6600 IP35 rig lasted (now repurposed to a Windows Home Server V1).
As for the board, they are still not saying if all 3 USB ports runs off the south bridge, if the sata ports are all SATA6 and runs off the south bridge as well. I also rather have an Intel NIC than a Killer NIC, personal preference.