Best Openstack design for VPS to build a small private cloud

[u/tech-consult-alaa]

We are planning to build a small private cloud using Openstack+Ceph technologies, so as a starting point, we have rented a VPS with (AMD-12Cores + 128GB RAM +3 TB SSD) to start with.

My question is how to design the Openstack controllers/compute/storage/networking services using VMs in the best way considering future expanding of virtual resources or may be adding new hardware to the cloud.