Configure Two-Server Odoo 19 Stack

I’m purchasing two fresh machines—one dedicated to the Odoo application layer, the other to PostgreSQL—and will manage them through Cloudpepper. Both boxes need Ubuntu installed and the disks combined in a RAID 1 mirror before anything else happens... (Budget: $30 - $250 USD, Jobs: Ansible, Cloud Computing, Linux, Odoo, PostgreSQL, Python, System Admin, Ubuntu)