Upgrades for my current rig?

so here's some of the items i plan on getting once my taxes comes in. both from newegg and monoprice. i also plan on getting a new desk for my room in terms of a glass and steel corner desk. any other ideas would be nice or advise. oh, and the desk will cost me about 135 split with my aunt

http://www.newegg.com/Product/Product.aspx?Item=N82E16811353092 < case

http://www.newegg.com/Product/Product.aspx?Item=N82E16824236100 < 3rd monitor

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139141 < psu

http://www.monoprice.com/product?c_id=115&cp_id=11502&cs_id=1150201&p_id=600800&seq=1&format=2&style= < pop filter

http://www.monoprice.com/product?c_id=115&cp_id=11509&cs_id=1150902&p_id=4753&seq=1&format=2&style= < main mic

http://www.monoprice.com/product?c_id=115&cp_id=11508&cs_id=1150804&p_id=602520&seq=1&format=2&style= < mic stand

http://www.monoprice.com/product?c_id=115&cp_id=11503&cs_id=1150301&p_id=615808&seq=1&format=2&style= < mixer

current spcs for my pc

fx 8320
gigabyte 990fx ud 3
zotac gtx 970
ocz 600w bronz psu
hyper 212 evo
g510s keyboard
g600 mmo white addition mouse
steelseries mouse pad
wired 360 controller
c270 720p web cam
acer 21.5 full hd "main"
proscan 720p secondary.

I would suggest the ASUS VX228H. Its cheaper and just about every spec is better. Or ASUS VP228H for the same price. The VP has better a better contrast ratio. Here's a comparison.