Shoul i go bigger?

Solution
You should be fine. That PSU is pretty good and capable of properly powering your system. It even has some spare power in case you want to overclock your CPU/GPU. You should get a bigger PSU only if you want to use the SLI feature and add a second GPU in the future.
You should be fine. That PSU is pretty good and capable of properly powering your system. It even has some spare power in case you want to overclock your CPU/GPU. You should get a bigger PSU only if you want to use the SLI feature and add a second GPU in the future.
 
Solution