Yeah you should definitely consider getting a little larger hard drive, since the reason you got the CPU for future proofing, the hard drive space would basically negate that original plan. A 500GB these days only cost around $60 anyway so it wouldn't be a huge increase in cash.
That and you might want to consider a better PSU. If you get a terrible power supply that is made out of low quality parts, then you could get some stability issues and possibly fry your components.
I'd recommend this power supply if you can afford it. Corsair 650TX Its got plenty of juice, and its on sale right now for $99.99 + Free Shipping.
Not Crazy enough. Change the psu to 750 corsair. Do NOT get the Samsung DVD. It has issues.... Get the Lite-on and what ever Hdd you get make sure that its at least 16mb cache. if not 32 mb cache. You get faster access.
Please explain. I have one and its been more then flawless.