Catherine the Great is coming for tea.

The chance of a rebuild taking longer than a failure occurring is non zero. RAID 1 is less protection that raid 50 or raid 60, plus depending on how many disks you have you will save space and get better performance.

But you need a good controller.

Good luck, but when you are turned down you should recognize the red flag and start looking for your new, better job, leveraging your new title to get paid what it is worth.