Hi Sir Every Thing Is Ok
I7 K Series With Z Series . (Best Choice)
Corsair memory ( My Favourites ) I Think Best Choice
And A Question : Why U Didnt Buing Win 10 ? But Still The Main Win is 7 So No problem. Its Kind A Personal Question LOL
Choose Western Hard Drice (Its Better Choice Than The Toshiba Or Seagate)
What Should I Suggest? Every Thing Is Fine!
Oh just Dont Forget If U Wanna Use The Correct Speed Of Ur Memory (3200 Mhz) U Should Acticate The Xmp Profile In The Bios Menu .
Thats It!
Enjoy Ur Gaming Experience (Maybe ! I Dont Know For Which Work U Buying It

)
Best Regards .
Khd