If your visa is rejected it'll be on your record and will show badly. Plain and simple. Dont apply unless you are 100% sure of your chances.
Immigration officers are not stupid. Prove to them that your visit is temporary and you have no plans to stay and they will give it to you. If you indicate that you're to be a typical pakistani cheat and stay behind illegally, then you can kiss your chances goodbye forever.
Also, you guys are chasing a fool's paradise. Canada is no longer the dream destination. Look elsewhere if you really want to take advantage of good education (Nordic countries)
P.S. TrueEyes - nautical miles dont mean a thing unless you've got your own plane.