I have been thrown into a unique network setup and could use some help. My network design started out with an Omada system (Router, Switch, EAPs) but I also need to incorporate a router to connect to

I just installed an Omada setup in my house with the following hardware and connected in the following order. WAN -> ER605 -> Switch -> EAPs -> Hardwired Connections I have a Linksys WRT3200ACM router