I feel like this is a project that would take advantage of a virtual machine host, then you can run 3 or 4 virtual render nodes on one host with many more cores and process more parallel workloads
Maybe this calls for xcp-ng as a host and then 3 or 4 linux vms running davinci render software looking at a watch folder ( I think davinci can do this or maybe even handbrake) I feel running on linux reduces overheads even further and frees up compute for rendering