So I am creating a laptop on a website and my budget is $1200 (I know, its not that much). I am customizing the MSI GX60, 8 gigs of RAM, 750GB 7200RPM hard drive, Stock OEM Thermal Compound . I did not want a Blu-ray drive and so I saved $30. My question is, should i upgrade my RAM to 16GB, upgrade my hard drive to 1 TB or upgrade my cooling. I can only choose one of them