2 networks 1 isp

[The7thgear]

Let’s say I want to have two separate wireless networks completely isolated from each other.
Option one. Get a plan managed switch set up a vlan for each router and use the modems connection as some kind of a trunk port to the outside world 
Option 2 get a router that supports vlan and turn each wireless router into a generic access point and have them on separate vlans.
I’m leaning towards option 2 using this router 

TP-Link ER7206 Multi-WAN Professional Wired Gigabit VPN Router Increased Network Capacity SPI Firewall Omada SDN Integrated Load Balance Lightning Protection https://a.co/d/7MjYZXc

Suggestions on a better way to do it or a device to do it with?

[Electronics Wizardy]

You can often do this with a guest mode SSID on a lot of cheap routers. 

 

But yea that will work here.

 

Access points can typically have multiple SSIDs, each connected to a different vlan, so only one access point would be needed.