Hey Postie hi and welcome to a great forum !
Unless the hawk disc are grooved, I could not see you needing them, the hawk pads are a great pad, I have a set for sale in the sale section nearly half that price you paid.
You could get a great set-up for 650 quid as the dealers was asking, they do know how to charge...
I would maybe as DaveB1970 if he had any brake setups for sale, as you could pay that for a GOOD SET-UP.
you would need to get your post count up first,before you can pm.
Otherwise a decent set of discs like Brembo or even Oem ones would be suitable.
The oem brake fluid from the dealers would be suitable.
Have a quick search with the search button at the top of the page to help find some answers, or google.
hope that helps you out a bit!