That sound card will kill your airflow, and not really give you much benefit for it.
The HDD and PSU are OK, but not high end-I would reconsider them.
You won't see much benefit from the 2600k over the 2500k, or from 16GB RAM over 8.
Those 460's are getting a bit long in the tooth.
Why no SSD?
They should all fit in the case though.
Fitting your video card should be your biggest concern. Everything else is all usually the same size and is made to fit together. Check around online for the dimensions of that card and you should be fine. But your case is meant for gaming so chances are they've given you as much space as you'll need.