@Alexandre. Thanks for help. This looks like a very flexible solution. Even for three ports. I have done some research and found out that "DECO Mesh" tehnology is not compatible with "Easy Mesh" that...

I want to buy TP-Link Deco X10, AX1500 or TP-Link Deco M4, AC1200. Still didnt decided but first I need some additional info. First unit will be connected to my existing router as a internet source....