Are you sure that power supply is going to be good enough?
I haven't checked all power requirements on the selected parts, but even without checking, I would say you may want room for upgrades down the road so you may want to go a bit bigger.
As for case..
We'll you'll want to go with something you'll like and be able to live with for at least a couple of years.
My favorite one so far has been from Lian Li..
My current case is the Lian Li Alpha 550x.
Check it out. It's a solid case made of steel and serious tempered glass, not like most of the cheap ones made of aluminum and thin tempered.