Note that if you don't put much data on your PC (just some games + rendering software) You could allways get an additional SSD (120GB or 250 GB, or a hybrid SSHD) and put it in. Then use the original HDD in an external enclosure as external HDD.
To safe some money for that you could opt to an i5 model of the MSI laptop since you'll just do light gaming anyways. But note that your rendering + CAD (depending on how heavy the workload is) will get slower. - in return you have a SSD in your system.