i knew someone was going to be along sooner or later to answer my question.
I phoned Audi Southampton today and they sell them for Ł16.52 each so for that price will probably just get them from there as i can get them on the day.
Glad to know someone has changed them successfully themselves so will give it a go too. Good advice on the soaking overnight idea will defo do that and then try not to rush it and take my time.
Am going to do the plugs and if that does not help my poor cold starting issue i am gonna get the timing looked at by my local idependant garage.