@T_G 

Evening..

The Deco and Omada systems are very different and wont naturally integrate fully, it would depend on what you are hoping to achieve here.

Mesh systems generally only work together in the one family.  Deco will work with any Deco, Omada with Omada.. but not together!  

That being said, you could cable the Omada AP into the Deco, but it would work as its own entity (no roaming or mesh).

What have you in place at the moment hardware wise?   What is your ISP router for example.   Are you looking a mesh system for the whole house and driveway? 

Just be careful with the term "Mesh System".  All that really means is mutiple APs connected via WiFi (no cable), so if you are running cables here then its not a Mesh you are after.

If you can give us as much info on what you are looking to do, then hopefully I can chuck you a few ideas :)

  @Philbert Thanks for the response. I did a bit more research and saw the omada and deco aren't able to integrate. Seeing what is required for Omada I felt the cost (and brainpower to get my head around it) wasn't justified.

I definitely want to retain the mesh aspect because of the size of the section (3500 square metres). Running cables up the driveway for the network may be impractical (150 metres long with a 25 metre elevation from house to the top of the driveway). I did see TP-Link are releasing an x50 outdoor deco unit which I will mount on the top of the house with the hope the cast reaches around the property. Any advice on how to place a unit? I have purchased two deco x55 units to start with. Have included the sat view of the section shape.

  @T_G Hi, I might have different options. EAP610 did work with Deco X55 via an Ethernet connection. Deco mesh and EAP mesh are not compatible with each other, which does not stop EAP610 from being able to extend the Deco connection elsewhere. It is just when a device is out of Deco wireless range and moves to EAP610, the wrieless roaming would be longer and noticeable. Considering there are 150m, I would think it is acceptable. Other than that, EAP could not be controlled via Deco APP and it needs another Omada APP. I have Deco M9 plus+EAP110-outdoor to provide a wireless connection for my security cameras that are 50-60m away. Since X55 does not support POE, I think you might need a PoE switch as I do. Another advice would be mounting EAP610 halfway to the driveway, on the tree or pole maybe.