Here my wery good setup for csgo. Please ask in comment how to optimize.


mouse:
http://www.amazon.com/Microsoft-Basic-Optical-Mouse-P58-00062/dp/B009SPWCUO
keyborad:
http://www.amazon.com/Keytronic-E03600U-Keyboard-beige-cable/dp/B001150KDK
micphone:
http://www.amazon.com/DURAGADGET-Microphone-including-Messenger-NB100-11R/dp/B0036APZQK
moniter:
http://www.amazon.com/HP-vs15-Flat-Panel-LCD-Monitor/dp/B00094NNJ2

many people ask what headphone i use but i use speaker.
Here is headphone i think is best:
http://www.amazon.com/Sentry-HO415-Lightweight-Digital-Headphones/dp/B002Y3PQHS