Use Existing Router?

[79AG]

I have an existing Linksys EA8300 router that works fine.   Can I use it as my router and make the Orbi router a satellite without negatively effecting performance of the mesh network?   Will I get better coverage using the Orbi router as a satellite?  TIA. 

[plemans]

The router can't be used as a satellite. 

But it can be hardwired into the linksys. then you'd setup the orbi in access point mode to prevent a double nat.