Putting my pontification hat on, maybe consider separating demanding server duties and routing/firewalling either on dedicated devices or use sufficiently powerful VMs to on beefy hardware if you want to consolidate hardware.A dual core a9, while clearly one of ARM’s better cores*, without encryption offloads/assists might be better used as pure router. Personally I do not expect the next omnia to beat x86 solutions if the goal is to run heavy VMs, but I might be wrong.
*) No sarcasm the a9 IMHO is an excellent core, but it was introduced 2007 according to wikipedia, that it might not fully deliver on a demanding 2022 workload should not be held against it.