As far as psu goes I would be tempted to to an 850 (or more) watt gold unit. It is probably overkill for what you need right now but it would be somewhat future proof as it can go into your next build.
My shortlist would be:
http://http://ncix.com/products/?sku...acture=Corsair http://http://ncix.com/products/?sku...%20Electronics http://http://ncix.com/products/?sku...e%20Technology http://http://ncix.com/products/?sku...anufacture=XFX
The HAF X you have picked out has good airflow, lots of room for components and decent cable management.