I think you will be fine with what you have planned.
My 2670 stay cool with cheap 16$ 3 pipe coolers. Have good airflow in the case you will be ok.

Picked up a Phanteks case today. Seems very roomy and just need the rest of the stuff to get here.

I like Phanteks cases, I have 3 of them.
Nice and roomy, can arrange them easily.
Well built. Good bang for the buck.

Dang nabit, got one tooth fixed and now another toothache on the other side.

thanks bill, that was super helpful. 
hope that tooth feels better...

bill1024
I like Phanteks cases, I have 3 of them.
Nice and roomy, can arrange them easily.
Well built. Good bang for the buck.

I have one too........sitting...........MOBO wouldn't fit. IE: Pay attention to the DETAILS (as in photos) (Unlike me thinking I could wiggle the MOBO in) I am off by 7mm due to the angle on the MOBO mounting area. I liked the looks of them and as Bill says about the "bang for buck and build quality" +1

howdy2u2

bill1024
I like Phanteks cases, I have 3 of them.
Nice and roomy, can arrange them easily.
Well built. Good bang for the buck.

I have one too........sitting...........MOBO wouldn't fit. IE: Pay attention to the DETAILS (as in photos) (Unlike me thinking I could wiggle the MOBO in) I am off by 7mm due to the angle on the MOBO mounting area. I liked the looks of them and as Bill says about the "bang for buck and build quality" +1

Uh oh, now I'm nervous.

I picked up the green enthoo pro (was on sale - and looks better than I thought). I agree with Bill, it's built impressively well and flexible, especially for the price. it fit the bargain intel ssi eeb board no problem, except it unfortunately is missing one stand-off hole. figure 8 of 9 are good enough. 

yodap
 
Uh oh, now I'm nervous.

 
You'll be fineeeeeeeeee, nothing to worry about. If I had paid attention to detail and not been looking at umpteen different cases, wrote down the actual specs of everything I was looking at...........I wouldn't have screwed up (maybe)
 
EDIT: what are the dimensions of the board you are wanting to put in it? I have a FTW-K (264mmX305MM) sitting here and the case, I could break the seal on the MOBO and test fit if you like.
 
EDIT 2:  Well all was good on my test and tune for the revised rig........until last night...........a stick of RAM went belly up for what ever reason, BIONC "waiting for memory" flagged in the manager .......now I'm down to 8gb and will be returning the whole set to Amazon for replacement vs RMA since it's 4 days new. Too bad it wasn't a DDR3 rig...........I have a lot of those that I could steal from another rig to run 16gb at least....

Number Fields is a painful project.................Est time 1:57= 14hrs long
At least PG gives you a time est that will be met or come in earlier than projected............Then again, either work excellent as a test-n-tune for a OC and temperatures
That is all........