Install Proxmox VE (or hypervisor of your choice) and then OPNsense as a VM inside that. You won't be disappointed.
Sounds interesting. Can you point me to link(s) to reading about that and the pros/cons etc.? Or can explain to me like a noob why this would be better? Took me 3 years just to figure out this far lol, so any guidance would be appreciated.