Incidentally, I asked the above about the availability of the listed c-41 kits some time late last year, and was told they're no longer available - they were actually reselling kits from a camera store in Montreal, who stopped making them. So, unless they've changed suppliers, they may not have them anymore.
I don't see the CD4 itself listed, but it might be worth sending an email to ask.
As for the liquid chemistry, I have also been unable to find it in Canada - I asked Henry's out of Toronto, but received no reply. As you're no doubt aware, the US retailers can't ship the liquid chemistry across the border (designated hazmat), but in most cases they can ship the powdered - specifically I asked Freestyle if they could ship their own powdered c-41 kit, and they said it wouldn't be a problem. I'm not a big fan of the concept of powdered chemistry in general, so I haven't pursued it further.