Some Basic Facts:
1. Visa is very strongly dependent on your overall profile. If you are academically sound and have an impressive overall profile. Nobody is going to refuse you a visa.
2. When applying for a Degree, make sure the "Level" of education that you are intending to get in Canada is higher or at least Equal to the level of education you already have. Otherwise you are likely to end up with a refusal with a "Study Mismatch" reason.
3. You just need to show the expenses which can cover a) Tuition Fee + b) Living Expenses + c) Travelling Expenses for 1 year only. There is no such thing as an increased chance of visa if you are showing insanely huge sums of money in a bank account. This wont help you get a visa. The officer isnt interested in how rich you are. He just wants to see if you have enough to cover up the above.