i'm planning to get a Case corsair vengeance C70 or a graphite 230t compact, with a intel i7 4770k a video card evga nvidia gtx 970 with a 1tb at 7200rmp and a 240 SSD with 4 Fans
The Corsair Vengance C70 will be better for you build. More room, Much better airflow. Also it might be worth it
to go for the i7 4790k. It is a few dollars more and is clocked at 4.0 Ghz. The card will fit fine.
i'm planning to get a Case corsair vengeance C70 or a graphite 230t compact, with a intel i7 4770k a video card evga nvidia gtx 970 with a 1tb at 7200rmp and a 240 SSD with 4 Fans
500 Watts will be fine. Just go with a good quality PSU.