No need for all that. Just set your router up DHCP as most of us do and you'll be fine. If you increase your mining to dozens of units or more then maybe upgrades would be needed!
Simply when system connects the any network that it automatically discovers the broadcast message for dynamic IP for the concern PC but for a dhcp server it will be remain with the static IP alone. Nearly 4 to 8 connects as now but when you increase the number miners in the one router which has low data transmission you need to upgrade it.