Gaming Rig Build Help Please!

Approximate Purchase Date: Before Christmas

Budget Range:600-800(Looking for the best bang for my buck! So if there is a great setup for a little more than what I am looking to spend I'am willing to consider)

System Usage from Most to Least Important: Gaming/Streaming games on Livestream,Movies(Dual Monitor)

Parts Not Required: Keyboard,Mouse,Monitor,Speakers,OS.

Preferred Website(s) for Parts:Newegg only please.

Country: USA,Florida

Parts Preferences rocessor:Intel. Motherboard:Gigabyte,MSI or ASUS. Case with good airflow(I live in Florida and it gets hot)

Overclocking: Yes

SLI or Crossfire:Maybe(In time)

Monitor Resolution: I will be buying a 1080p HD widescreen monitor within 2months of this build not sure on resolution but the more the merrier.

Additional Comments:I enjoy having a side window on my cases though airflow is most important so I am open to suggestions. I appreciate any and all help with this build, I haven't built a new computer in 5years and I am completely out of the loop on new hardware. Thank you!