WLAN extension for existing network / Roaming

Hey there,

I am using a Netgear R7800 with latest build for a DSL line serving WLAN clients in my LAN. So far I have no issues except that my WLAN range is not enough for my environment. I am now looking for a WLAN Access Point which will be attached to the R7800 switch ports.

Are there any recommendations? I also thought about buying the R7800 again but this seems to be a bit overdose for a simple WLAN AP?

My goal is to use WLAN roaming so that my clients can smoothly transition from cell to cell.

Anyone have a successful and running setup like this and recommend some AP or even a second R7800?

Thanks a lot!