Not too sure why people are eager to pay off their tab when they are planning to stay with Koodo. Just let Koodo pay off your tab for you as every month 10% of your plan is taken off of your tab. There's no rush unless you want to change carriers or get a new device, which would mean you would have to pay your outstanding tab first.
You can always refer your friends to Koodo and receive a $25 tab credit once they activate. www.koodoreferral.com