Server Migration with Security and Performance

I'm looking to perform a server migration on two Ubuntu servers running WordPress and Docker Redis.

Requirements:
- Migrate all settings and configurations exactly as they are to the new server.
- The domain has already been moved.

Additional Services Needed:
- Security audit
- Performance optimization
- Backup of existing servers

Specific Server Configurations to Replicate:
- Firewall settings
- User permissions
- Scheduled tasks (cron jobs)

Testing:
- Please test all functionalities post-migration to ensure everything works as expected.

Ideal Skills:
- Experience with Ubuntu, WordPress, and Docker
- Strong background in server security, performance optimization, and backup solutions
- Proficient in replicating server configurations
- Reliable testing capabilities