Neither will bottleneck a i5-3570k. But if you're running 1080p or 1200p the GTX 770 will be more than sufficient for any game on the market, even Crysis 3 LOL@ Md saiful's thinly disguised spamming.
Well 780 is better than 770 and if you have enough money to get the new 780 you should have enough money to get i7, cause your processor may bottleneck your new graphics card.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.