First of all, urgent processing is never granted without proof of travel. So you need to provide a purchased plane ticket with your application.
However: Just meeting the residency obligation is usually not enough to get your PR Card again without investigation. You can assume that because you have just barely met the minimum residency obligation, your application will be sent secondary review and you might even receive a residence questionnaire. It is extremely unlikely that your request for urgent processing would be accepted in this scenario. Whatever family business you have will have to wait, unless it is something like a funeral/sickness that you can establish to CIC’s satisfaction.