You would not be able to bank all 17 at that date. This is just a guess but I believe you have up to 6 months into the use year to bank 100 percent of your points. That would make May the last month to bank all of them, but do not hold me to the 6 months it could be less. I will be banking about 30 points soon but I have a April use year and have made all my reservations for the use year already. That is 100 percent of the total.