Hi, I'm looking to use a range of deco products to achieve internal and external buildings WiFi coverage for a large home.
 

The main house looks like using maybe as many as 7x Decos as a Max.

I have a network bridge to a complex of small out buildings near the main house which will have a POE switch + an external AP and a series of 2x Decos connected.

So should I set the main house as Deco WiFi network 1. Then new network for outbuildings as as Deco WiFi network 2. I.e separate SSID's

Or can I link them for complete roaming?

any useful comments pls.