Worst case scenario, you have to cut out part of the case. Most likely scenario, you have to use a few less hard drives than the case allows for, because there isn't enough room for every hard drive, and a large video card OR you have to also unscrew a few screws. Best case scenario, the video card goes in with a bit of a tight fit.
If your heart is set on that case, ask around about that specific case on amazon or something (here would also work, but I don't personally have that case), to see if other people had problems with full-sized video cards, and/or what they had to do to make it work.
If you are not particularly invested in that case, and finding out more stuff seems like too much work, just choose another case to be safe.