Just get plugs at a part store. I prefer copper. Yes, you have to change them more often, but copper is a better conductor.
I have ran Taylor wires for years and have had no problems with them. I've heard good and bad about both Taylor and MSD wires though. Its all in who you talk to, just like some people like Fords for some odd reason. Get which ever you get the best deal on. 8mm, 8.2mm, 8.8mm doesn't matter. Its just the thickness of the insulation. Our wires are so short even the stock wires do fine.