Maybe consider some regional redistribution in addition to how it was done this time? Would require a bit more coordination to ensure each city is ordering in 10 or 20kg multiples, but would share the manual handling workload out a bit more and likely save a bit of postage if a pickup location is possible in major cities where the order is big enough. Wouldn't make sense to send out, repack and then resend, just for pickups where a lot of people would have access. A lot cheaper to have 20kg couriered than 5x5kg satchels if it can be coordinated successfully.