Depends on where you are, Ireland? How much overclocking? You have yet to tell me your actual CPU. I know it's not an i5 6600K. Is it an i5 4690K?
If so and to allow for later upgrades, a Seasonic 520W, or an XFX 550W. Or, link to a site where you would bur from and I'll rummage around.
The CRYORG H7 is decent. If you want really good cooling for a high overclock, something like the Noctua NH C14S.