Doing it on the last 1-2 days is easier! I don't think I would be able to make this experiment on the first days of the season, I mean it would take much more time and probably I would need more cards.
And if you own all / most of your cards, you sleep better. You don't have to worry that you don't have important cards and there are no available on the rental market haha!
That last part is true... if only I would know how to use them properly 🤣