Can't really get any more cutting edge than that. Have you ever seen one of these, though?
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231819
This thing will outperform even your 850 Pro's in RAID 0.
Also, that PSU is just okay. Consider one of these as an alternative. If you're going to get a cutting edge system, get a cutting edge power supply.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817438029&cm_re=evga_p2-_-17-438-029-_-Product