Building a Computer -- Help/Recommendations

I was building a computer and have almost everything I need already, but when i went to go order my "Asus Radeon R9 280 3GB DirectCU II Video Card" it was out of stock ... Should I continue waiting who knows how long for this one specific card to come back in stock, or is there something much greater for around that price point and performance that I have glanced over and skipped??

Some important Info. :::

Link to PcPartPicker Build --> My Build

The games I mostly play will be ARMA 3, GTA V, Euro Truck Sim, DCS, Minecraft (FTB), Dont Starve, Sim City 5

Grab the 280x if you can afford it but if not grab the one of the 280's.

280x: http://pcpartpicker.com/part/xfx-video-card-r9280xtdfd

280: http://www.newegg.com/Product/Product.aspx?Item=N82E16814127789&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

280: http://www.newegg.com/Product/Product.aspx?Item=N82E16814202099&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

You can search else where other than pcpartpicler.

https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=asus+radeon+r9+280x&tbm=shop

Asus coolers aren't very good on Radeon cards. Look at XFX or Sapphire.

i would spend a few bucks more on the gpu if you can afford, and grab a Sapphire R9-290 Tri X OC. its not that much more expensive then a 280x, but its worth every single penny.