Have you looked at sourcing the components from an online vendor like Newegg? I don't know if your prices are in Canadian $ and maybe they are different that US $. I think Zalman products are overrated and expensive. Drop the SSD for a WD Velociraptor. More space and you will hardly notice the performance decrease.
Maybe step down a little from the OC graphics card. I got a mid-tier graphics card and I was really surprised how powerful the new range of cards were. Mine was Radeon HD, but the same should apply to Nvidia.