Below is a a weekly estimate based on time they've had for parts creation, experience from other production lines, etc. So 40,000 is viable, but highly optimistic. 25K would be more likely.
9/22
9/29
10/6
10/13
10/20
10/27
11/3
11/10
11/17
11/24
12/1
12/8
12/15
12/22
12/29
1/5
500
950
1250...