Just a couple of questions. What are you going to be using this for, and do you already have the parts? If you don't already have the parts, I put together a part list for you here that is basically the same thing, only it's upgraded to a newer Skylake build, and it includes a mid tower case with a 480W power supply. The part list totals $321. I know it's better to have a nice Gold Certified PSU, but you have a small budget.
Intel Core i5-6400T, Logisys CS206BK - System Build - PCPartPicker
Just a couple of thoughts. You didn't have a video card in your list, so I assume you either already have one, or you're going to be using the integrated graphics. Those will do you fine for productivity things, but not good for gaming. You also didn't include a hard drive or operating system in your list, so I assume you have that. You could add a 1TB 7200RPM hard drive to my build for around $45 if you need one, but Windows will put you over $400 if you need it.
