What kinda  router are you going with? Off the shelf or custom?

I found this thing on eBay a while back for super cheap. I just run Void Linux and using dnsmasq and a bunch of iptbles rules and it’s been pretty solid. 

https://battlepenguin.com/tech/installing-void-linux-with-a-serial-terminal/ 

 @djsumdog Poweredge R330. 2x1Gb and 4x10Gb NICs. 

 That is one powerful router ... looks loud.