how to virtualize this network, and how would I calculate the recourses required? (Number of ESXi hosts, RAM, CPU, and storage)

 

Quantity Device 3 Server Server Server Server Server Server 2 2 1 1 2 1 2 1 1 5 Server firewall router router switch Purpose Domain Controller SQL Cluster File server custom database HR system POS cluster gas tank monitoring firewall cluster edge router core router for Vlans switching CPU one 4 core 3.7GHz two 8 core 3.5GHz one 8 core 3.2GHz two 4 core 3.4GHz two 2 core 2.2GHz two 4 core 3.2GHz one 2 core 2.1GHz CPU usage % 30 50 20 40 30 40 10 RAM 128GB 512GB 256GB 512GB 256GB 256GB 128GB RAM usage % 60 60 40 30 20 30 10 Drives two 1TB six 1TB six 1TB six 1TB four 1TB six 1TB two 500GB Drive usage % 30 30 20 30 30 20 50