I know everyone has been doing their best. Wouldn't "We're still on schedule", still be 2001- 2400 in order of payment. I know 2001 to 2200 sounds reasonable, but for all the people that paid in that group ahead of time allow the delivery by order of payment. If you still deliver first 200 payments first half, and then second 200 payments second half. That leads to fewer bottleneck and an incentive to paying early.