As for the RAM, it looks fine as long as you know it is compatible with your motherboard. An SSD will definitely improve your systems' performance dramatically if used as your OS drive. When you save things to your computer they go where you tell the computer to put them...so if you don't want them on your SSD just tell it to put the file somewhere else. Also when installing programs the installer will usually give the the option to install them to a different location(sometimes a bad idea).