You really should consider getting more hard drive space. It's very cheap, and if you're going to use a recent version of windows it'll take over 10% of your available space by itself. Also, integrated or on-board graphics cards suck major ass. As kill dank said, don't expect to play any serious games on it. First you'll be bottlenecking your graphics card, if you upgrade that then your processor.
Unless you absolutely need the computer instantly, I would recommend saving a little more money for a better budget, because if you want to play any modern games you will need a dedicated graphics card, and you'll want a larger HDD and possibly upgrade your processor.
also the cases look ridiculous

