Well waiting or applying would depend on you - would you be happy going to Laurier university? is it more or less important that you attend a year earlier? Do you have the time and energy to devote to the GMAT?
If you are happy with the idea of Laurier, maybe you should apply this year, and then if things don't work out, you can take the GMAT between Dec of this year and June 2014 and then apply to many more schools next year.
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