Updating from 9 to 11 & Boot Mirror

[schoolpost]

Hello,

I'm looking to accomplish two things:
1. Upgrade from FreeNAS-9.10.2 to version 11
2. Move from my single USB boot drive to a dual SSD's ( Mirrored )

My Freenas hosts a RAID-Z3 Pool, which I mostly use as a home share for some windows machines.

What will I need to do in order to make the transition as smooth as possible?
Any thing to lookout for with moving to 11 ( specific version number to avoid with bugs? )

In my head, I figure the process would go like:
-Backup my current Freenas config
-Unplug the boot drive and the disconnect the existing ZFS pool ( just in case something happens )
-Install both new SSD's and Install the latest version of 11 onto a single ssd

The steps below I'm not sure about, at least in terms of the order in which they should take place:

-Setup the second ssd as Mirror?
-Reconnect the ZFS pool
-Import the configuration?

Done?

Would love some feedback, I'm trying to be very cautious about the process as to not lose any of the data on the pool.

 

[schoolpost]

Bump.

Well at this point I would just be looking to see if anyone had done a 9 to 11 upgrade and how they went about it
in the most graceful way.

 

[SweetAndLow]

1. Burn installer to spare usb
2. Shut down system
3. Install both SSD's and remove old boot device
4. Plug in usb installer
5. Boot system and check both boxes for the SSD's during install.
6. Upload config