Please fill this out:http://www.tomshardware.com/forum/261222-31-build-advice
Also, the Asus Sabertooth Z77 and Asus Z77 Pro-V is probably one of the worst boards in terms of cost/performance. Shown here, a $160 Asrock Extreme6 Z77 can upstage a $210 board. Definitely not worth the Sabertooth.http://www.tomshardware.com/reviews/z77-extreme6-z77a-gd65-z77h2-a2x,3187-22.html
Check out my $1100 build here:http://www.squidoo.com/electronicandmore
Add the 256GB SSD of your choice but honestly it'd be better to get a 120GB and just get a 1TB or 500GB for storage.
Wi-fi adapters work for any motherboards just use the USB ones.