amd fucking sucks. there is a reason you can get 8 cores for the price of 2.
i would totally get the k unless the cost differential is that great. i love knowing that in a few years i can oc this cpu and be up to 4.5. i dont come close to pushing all 4 cores now though.
i recommend the HAF series for your case. $40 you cant go wrong with coolermaster
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119227
i have that same SSD....its fantastic. You might save a few dollars by going with a 1TB or even a 500gb. I have a 1TB and in over a year i still have 471 gb left. with hundreds of shows and movies.
you will end up buying a aftermarket CPU fan, plus internal fans.
idk how it is in canada, but no tax ordering from newegg in US - see if you can get stuff on the free 2 day shoprunner...or see if you can get a 1 month trial of shoprunner for free to save some costs