New PC

Here is my setup I am currently looking at:

http://pcpartpicker.com/p/lXYh 

My main questions on this are the:

1) Case(What case would you reccomend? Are there cheaper alternitaves? Looking for a good mid tower with nice cable management options)

2) GPU(This vs. an AMD, different brand of 670, etc. I have a 550ti sitting at home but not currently in use)

3) PSU

4) is the i5 2500k worth the money or should I opt for a cheaper(AMD) CPU? Is my cooler ok?

6) Motherboard(I have no clue about these..Just went with the ASrock from logans videos.)

1) Yeah, I'd recommend a more affordable case, not that there anything wrong with that case, its just fairly excessive. But if you have the cash go with what you like.

2) I'd generally recommend the HD 7970 over the GTX 670, performs beter in most cases, very overclockable and about the same price as the GTX 670

3) Unless you plan to run Xfire/SLI in the future you don't need a 750W PSU. And at that, I generally don't recommend Cooler Master PSUs anymore since there are better alternatives for the same price. Check for some Seasonic, XFX, Corsair alternatives.

4) The i5 2500K fits your budget perfectly, for gaming there is no reason going beyond the i5 2500K, very overclockable as well.

5) The motherboard is very solid and highly recommended. I used one in my most recent build for a client and it performed very well.  

The phantom 410 is a bit smaller(mid tower rather than full) and $20 cheaper. It has enough cooling even for crossfired 7970's.