I am thinking if buying a new SSD. at the moment i have a 2TB SSHD with everything on and i want to buy a 120GB SSD for windows 8.1 OEM and GTA 5, would i just move everything i dont want on the ssd to a different HHD and re-install windows on the SSD the move the other data from the backup storage to my main 2TB SSHD?