I was reading different things about that, which is why I was a little unclear.
There is always potential for issues to arise. That said, the configuration you describe isn't inherently increasing the likelihood of experiencing said issues, in my opinion (based solely on my understanding of the DNS cluster you are proposing-one with WHM/cPanel Standard Nodes, each contributing 1 nameserver to the cluster).
Another way to go, that would improve scalability/performance, would be to create 2 tiny VPS (~10 gb SSD+~1-2gb ram+1 vCPU), install DNSonly on each and disable nameservers on the WHM servers (or, alternatively, using the WHM servers to provide a BIND backend for redundancy/caching purposes). The web servers will synchronize changes to the DNSonly nameservers, while the DNSOnly will have standalone connections to the WHM servers.
I know that probably sounds unnecessarily complex at the moment. You will thank yourself later, as it actually simplifies scaling the cluster moving forward.
Thanks for replying though and hope you had a good Christmas.
Thanks, it was fine.