Completely up to your router’s firewall implementation whether it prioritizes explicit dstnat port forwards (as suggested in the OP) over srcnat connection trac

Completely up to your router’s firewall implementation whether it prioritizes explicit dstnat port forwards (as suggested in the OP) over srcnat connection tracking. I suspect that most routers will support a “DMOZ” host, while at the same time supporting srcnat for outgoing connections, but I’m not sure whether it’ll recognize it as such when you also set a port range.