one you start using the Build you will some Start to understand what you need and what will be the best option for your preferences..
by the way you really should look at Some more Reference for the PC at around £800 or $1200 ... You should also try and understand What will be the bottle neck on the setup..(There will always be one )
I think this list need a bit of playing around with... You can always come back to the forum if your research doesn't help you
Keep the build with the XFX PSU unless you want a second PSU for troubleshooting purposes. I see no issues with the build as is but I'd love to see an SSD in there for OS/boot drive.
That's all I got.