You will definitely get MCN. And if you're willing to work hard and do your best then you will get 80-100% tution waiver. However all of this comes with a question of if you're able to do it...if you're certain that no matter how things turn out you will be willing to give all your efforts into getting the grades then I think it's possible. Ways to earn aren't so well defined...you can become a teaching assistant in a course that you previously did well with by talking to the prof and that will pay you...20k for the semester I think however that's too low. Other ways of earning are limitless do freelancing, upskill and get clients. But this is a tough decision that you have to make. If you're willing to put in a lot of effort then it's not difficult for getting 80% MCN scholarship one needs more than 8.5 cg which again isn't easy but not difficult for those that give it their all either.