Check the link below. I didn't use the kit that you linked, but I used factory matched paint from automotivetouchup.com and it turned out pretty nice.
It was a lot of work spread out over about 10 days, though. Knowing what I know now, I would've had someone else do it if I could have had it done for less than $500-$600.
http://986forum.com/forums/general-discussions/50450-my-dirty-little-secret.html