Well after some planning and dutch courage I have closed down my Pi-Hole and Adguard Services. These have been replaced with x4 Technitium Virtual DNS Servers, which are clustered. Two are hosted on my proxmoxserver1 and two on proxmox server2. I have also linked these to my domain, so my network is now served by four dns servers. Lots of redundancy built in.
My next step is to try load balance instance one and two.
maybe a good video with setup, clustering and load balancing, as an addition to the clustering video you did previous. I rewatched it today, thats what inspired me.