What to take for ASUS P8Z77-V LX REV 1.02, the current processor and RAM?

Question

Iron

Good afternoon !
It turned out to take a new motherboard from the hands of ASUS P8Z77-V LX REV 1.02, socket 1155. Tell me the optimal processor and RAM.
Computer tasks:
1) PUBG
2) Adobe Premiere
From processors:
1) Xeon 1270
2) i7 3770
3) i7 3770K
I can't decide on RAM what frequency to choose?
1) 1333
2) 1600