Multi-repo Project Migration Plan

The migration schedule can be referred in this timeline: https://docs.google.com/spreadsheets/d/1QoVePZMahhTcTKvlMHchO9Qq5TJQrpyWOZhXl0j-gzQ/edit#gid=2114732998
The connection between which modules corresponds with which phases can also be seen in the 'Modules' sheet.

The migration plan:

TL;DR: I'll need help on validating the migration on staging and production, since I don't have any experience with pricing rules and workflow service deployments.
I know how to use Ansible Tower, but just in case, I need someone that is experienced with both services.

Since pricing rules is scheduled to be done this week, I think we can proceed to do the migration from step 3-7 once I'm done.
I haven't set any concrete dates for the migration plan yet because I don't know ECI team's timeline regarding this and I don't think this is so urgent that we need to do this ASAP.
Moreover, we have release freeze in effect starting this week, so I'm thinking that this should wait until after release freeze.

Let me know if you have any further inquiries or comments.
Thank you.