That RAM is overpriced a bit. You want to get cheaper RAM. RAM brand doesn't matter much unless you get bottom of the barrel. That PSU is a bit too much. Try to get a cheaper one from a reputable brand at about 650-750W. Will you overclock? If not, get the ASRock Pro3/Pro4 board.
Yeah, go to newegg's PSU calculator. Can save a few there. Also try PC Part Picker. Going from newegg to there, saved me literally 120 bucks on my build because they showed me the best deals period (locally and online). The system you want is quite similar to mine.
No one needs 1tb of space at the get-go. You can always add more when you have the cash, external (easiest) or internal (best performance). Also while corsair is good ram, what will you be doing? If it's gaming then you should be great with that. Just be careful as eBay will and try hard to rape your wallet.