You already have an answer to your question, in the good explanation at https://serverfault.com/questions/368512/can-i-have-multiple-dhcp-servers-on-one-network. Once you start segregatting devices and computers into seperate IP ranges and such, you are a small step away from VLANS. The VLANS...
Yes to Q1 -- Yes sort your devices into discrete IP ranges. It makes management much simpler.
Yes to Q2 -- for a small home network it would default to workgroup.
Solution for third issue is to use DHCP (and DNS) from PiHole, rather than the main router. The main router will have its DHCP...
Ah the advantages of cloud service over CD/DVD/Bluray/Plex/Jellyfin :). Not to forget the rental libraries, where you pay only for what you watch and when you watch it.
If you go for proxmox route (openwrt x86 on proxmox) with a smart switch or multiple lan cards and you dont need vlans (multiple networks) on the AX wifi router it is not an issue at all. The wifi will all become dumb **access points** . Vlan functionality is required with oem firmware or...
If we spend enough time on TE, we keep getting more and more ideas for tinkering with our home networks. While SBC like raspberry pi or some openwrt router can run an ad-blocker, vpn etc.., these tasks can be very ram intensive (pihole) or cpu intesive (vpn). We can also soon out-grow the...