Going with two different strategies... with repeaters and without.
With Repeaters:
5,6,15,18,20,21,22,24,28,36,39,42,45.
Without Repeaters:
5,6,15,18,20,21,22,24,26,28,36,39,40,45.
Best bet: 20
Good luck all! Hope there is an early Christmas present for many of us tonight!