Answer to the second question is definitely no! We have Brembos remember...
Standard pads are available from Honda, about £45 for the fronts. I'm sure you can get the discs too, dunno how much though.
Ferodo DS2500s are often quoted as being good, haven't tried them myself. I found Mintex 1144s very good on the DC2 so will probably go for them when the time comes.
Suppliers - TGM, System-R, maybe Sumo? You can certainly get J's Racing discs from Sumo, they seem quite popular.