The only real concern for that build is the PSU you have chosen. The NEX doesn't have a very good reputation in review circles.
Take a look here to see some recommended ones
http://www.tomshardware.com/reviews/best-psus,4229.html
Also, you probably are already aware, but your SSD is going to run out of space fast. I run with a 250Gb myself, and wouldn't want to go much smaller than that. But if you're the type who doesn't load a bunch of games on it, and are fine with having some on the HDD, then you can get by of course.