@NikSf153 

You will not need to add a Deco.

This is how you new network layout will look, with Deco mesh running in Access Point mode:

If you have enough Ethernet ports on new router you are going to get, you can even remove switch from the layout by wiring Deco directly to the router:

In both cases, to avoid issues, I would suggest to get TP-Link brand router, which should support Deco Ethernet backhaul. Check the following model: TP-Link N300 WiFi Router (TL-WR841N).

In my region (Canada) they sell it on Amazon.

  @Alexandre. Oh great. This is immensely helpful. I will have to use the switch because it is powering the decos via poe. Will try out a tp link router and update this thread with the results. Thanks again for your prompt replies. Warmest Regards