Don't waste your money on 750i board which do not run SLI at full speed!
Get a 780i one if you really want to SLi
ASUS P5N-T Deluxe
MSI P7N Diamond
Why do you need an extra LAN card?
The sound card you've choosen is not really good. Not sure if it is worth over the onboard.
Choose an SATA DVD burner!
If you plan to SLI, you'd better get OCZ GameXStream 700W PSU