Don't get the motherboard, MSI or dfi are the way to go there are other good makes as well, but you want the big names like MSI, DFI or Abit.
You have chosen the most reliable make harddrvie, you might want to go for sata though, maybe even get anouther and put it in RAID1 (extra reliability)
I can't see a psu.... For reliabilty and safety as well, get Antec, Thermaletake or ocz.
It is all compatible though (apart from no psu, but that is a wrong link by the looks of it.)