What Size Case Will I Need?

Broba Fett

Honorable
Sep 8, 2013
102
0
10,690
So come up with my first build as per below:

1. AMD FX6300
2. Gigabyte GA-990FXA-UD3
3. 8Gb G.Skill Sniper
4. Gigabyte GTX660
5. XFX Core Edition 450W
6. Seagate 1TB HDD

But I'm having trouble with the case. What size case will I need, a Full Tower or Mid Tower? (I honestly have no idea). And what would be a good, cool-looking (relative, I know), case to go for? I like the Thermaltake Overseer (here) but this would stretch my budget (I live in Australia and everything is more expensive here :( ). Any suggestions for what I should get? ( The build is for gaming so preferably something that has good airflow :) ). I'm not fussed on going uber-cheap, but I can't really go over $120 (again, I live in Australia, I added the link to give you an idea of the prices out here).
Thanks.