From a quick google search, I believe the AMD Radeon HD8670D is the embedded video card in your A10 6800K.
Those CPU chips are a CPU w/ a build in graphics cards. Mine is the same way, although I don't use it, I have a separate graphics cards. I don't know much about their performance. Have you used it for any of your video editing yet?
Yeah... you would install Windows (and any other frequently used program) to your SSD, and then all pictures, musics, videos, etc. that you don't use often, but are just saving to your 1 TB HDD. SSD are much faster at pulling up information. My PC went from taking a minute or two to start up to only a few seconds. Windows loads up and is ready to go in about 10-15 seconds now. It's crazy how fast things load up on an SSD.
So yeah, you'd have two hard drives, a SSD for Windows and then your 1 TB HDD for long term storage stuff.