Don't know if my way of backing up will help you. I have a 128 SSD on which my operating system and programs go I also have an internal 1TB drive where everything else goes,games including Steam folder which at the moment has nearly 200GB of games, my music and pictures, videos and films and of course documents.
I then have a NAS drive 1Tb on which I back up much of whats in My Documents all my music and pictures and video/films. My personal documents are also backed up to DropBox.
I used to clone my main drive the C drive but to be honest see little point in doing so as each time you clone you are also copying the rubbish,I find it simpler to reinstall Windows when necessary.