i trust all of these 100%, have used them loads of times, they never dissapoint. novatech is great for when you need something in a pinch, reliable & cheap next day delivery. ebuyer is great for the free super saver delivery & dabs great for it's open box specials
do you really want to trust all of your components to a £20 PSU? No thanks, get a decent brand PSU, I personally recommend Antec, been using their 550W NeoPower HE for 7 years in continuous use in almost total silence with no problems whatsoever.
The Amd bulldozer is quite power hungry so, when OC'd it consumes a lot of power.
For an OC'd bulldozer + GTX 570, the Corsair TX650 v2 would be great choice, with enough power for heavy overclocking as well
Although it would fit all your components(Not so sure about the Frio advanced), Don't buy a cheap & tacky case like that.
The build quality would be cheap & terrible. Invest in something much better.
For a few more pounds you could get the Zalman Z9 http://www.freshtechsolutions.co.uk/components/cases/za...