I know you wanted Western Digital, and if you really still do you can get one for similar price. I put the Samsung Spinpoint F3 as an option as it is one of the best HDDs there is, and with the discount it is only $69.99 right now.
You could spend more on the motherboard to get full x16/x16 lanes for XFire. I am not overly familiar with AMD mobos so someone may be able to suggest a better one.
The combo deal gives you a great GPU and I believe the XFX PSU with it has been made by Seasonic so is good quality.
The only thing missing is the CPU fan for overclocking, usually I recommend the Hyper 212+ and if you can find it for $30 or so it is worth it, but its price has gone up a lot so you may want to find another. There are many great coolers around and I am sure someone will suggest one for a good price. Assuming you buy a decent cooler for about $40 that brings your total to $1205.88