P6T range is a good choice of mobo as is the CPU.
There are only two items in your list that I would quesiton.
1) Quattro 850 PSU..... never heard of them and would recomend sticking with
Corsair / Antec / OCZ
2) HD - not sure how much you want to spend on a HDD - but ebuyer have the
Samsung Spin Point F3 at a reasonable price.http://orders.ebuyer.com/customer/shopping/index.html?action=c2hvd2NhcnQ%3D