[Build Help] First time builder, advice needed!

Hi, this is my attempt at trying to choose parts for my first self built computer. However, I'm not exactly sure on how to pick a power supply and the current one I have chosen was kind of on a whim. If possible could anyone recommend me any budget power supply? Also if possible could using the PC generator website it came up with this: http://choosemypc.net/ca/?budget=700&oc=false&options=od[1] and if anyone could tell me how much of a drop off will there be compared to the one I have chosen. Thanks in advance, please forgive any formatting problems I have first time posting here.

Build I have chosen: http://ca.pcpartpicker.com/p/3kqxWZ[2]

Games that I would like to play on this computer: Skyrim, League and Tera (not necessarily max settings, even mid level will be fine)