That sounds pretty similar to how I have my network setup:

• PiHole has conditional forwarding configured (true,192.168.0.0/24,192.168.1.1,lan note: .lan is optional here, I uss it for my internal TLD) to get device names from router
• PiHole uses Unifi as the upstream DNS and DHCP
• Unifi uses cloudflare as the upstream DNS
• Unifi hands out the PiHole as the DNS via DHCP config

That way I get stats in all the places and can use Unifi for DHCP.