Hi Dave,
Let me know how you get on with the new pads - at £30 a set I would be interested in fitting them myself too - will you be putting up photos? Any awkward bits? Did you have a manual or is it all straightforward?
front and rear pads are a simple fit... also changing disks is a doddle too. if you do a search on here i am sure you will find threads showing how to do the disk replacement and this will include pad replacement....
at forty five minutes that would have to include jacking the car up removing the tyres and then completing the opposite side
for pads i would suggest eurocarparts... but there are loads of places