I really wish I hadn't come across these guides on Youtube.. I was doing so well convincing myself that I didn't need watercooling in the old PC, mainly with the one main lie to myself that I probably couldn't do it... Well thanks, these guides blow that completely out of the water (no pun intended!

)
Now, all I need to do is order all the bits needed whilst my Mobo etc is away under RMA, so when it returns I am ready to go.
Cheers for the guides, they are most helpful and have answered a few of the remaining questions I had left.