Most games get absolutely ZERO benefit from being on an SSD.
Look at it this way: if you're playing CoD, and you zone into the map first because of your SSD, you still have to wait for everyone else to zone, so there's no point. The only games that should actually be on an SSD are MMOs, due to their long loading screens, and single player games that have long loading screens which break immersion. Any other data and games should be on a normal 7200rpm hard drive.
Also, I'd avoid refurbished SSDs, just because they've been used before, and SSDs have caps on how many times a cell can be written to. Now, that being said, it's unlikely to have really affected anything, but still. You really only need a 128GB drive, which is plenty for windows, programs, and a handful of games.