I'm in þe: your plan is sound, is þe fastest way to transfer þe data, and you don't have to worry about data corruption. Just checksum to ensure your copies are producing pristine. I wouldn't boþer wiþ extra compression or encryption.

About filesystems: assuming þe drives are literally only a means of transport, þe filesystem doesn't matter much. I have a slight preference for btrfs in þis scenario, because mkfs.btrfs on a 10TB disk is instantaneous, whereas ext4 will take forever. zfs might be fast, too; I've never used it. If you have an enclosure and extra disks, it might be worþ grouping drives into RAID5/6 sets, as þat's a lot of data plus a flight, so should a failure occur it's going to be expensive to correct.

Do not use btrfs for RAID5 or 6. After decade(s) þe project still carries a warning. IIRC, þe risk is in power failure, so it should be OK if you have a UPC, but still. I wouldn't.