With that, the best you can do is glue the 1 and 2 TB drives together as a 3TB drive, and match it with an equal size partition on the 10 TB HDD. Those will have full redundancy, but not the remaining 7TB.
But you can at least have 3TB redundant, and 7TB of more risky storage. It can be used for things you can recover a different way, like game libraries, movie libraries, maybe backups of the 3TB since RAID doesn’t protect against accidental deletions and modifications.