Optical Drive Replacement

Hello guys, I'm new to this because I recently decided to upgrade storage on my laptop (preferably to SDD), which required me to do lots of research but I'm stuck now and need guidance. I discovered that there's an Optical Drive slot on my laptop that it's basically empty, the user manual...

As the title of the thread suggests, I recently purchased an EVGA GeForce GTX 960 4GB PCI-E 3.0 X16 Graphics Card (http://) and I was reading some reviews on the Newegg product page. One of the reviews advised that there needs to be a minimum of a 6 and half inch gap between the motherboard and...