Ok, you chose a cooler that's not much better ability than what would be stock for that cpu. You chose a good psu, that's 100w too small for that gpu. You chose a gpu that'll handle a 27" 1440p easily, and paired it with a 21" 1080p?
I can understand budget restraints, but the build is kinda lopsided. So, do you want the gpu for a larger monitor that doesn't require a magnifying glass to see, or perhaps a cheaper gpu that's a much better fit for that small monitor? The psu might stay or go depending.