Why not have a one-price plan? Pay one price and then use your phone as you want, and when you have used it up, Koodo would just bill your credit card for another top-up. I find the plans here, and elsewhere, are rather confusing.
Base plan renews on a monthly basis, and your boosters can be used until completely depleted. You're then free to buy new ones. They're also stackable, which means you can buy a new one before the old one is empty. The sum of the 2 is your new allowance.