With WiFi, mesh a lot depends on your ability to place the mesh nodes in a spot where the wireless link budget (RSSI) is reasonable from the root-AP (and hoping that it stays that way all the time; there are external factors that can impact it over time).
If its possible, you are better off back hauling your network through Ethernet (between the APs).
If its possible, you are better off back hauling your network through Ethernet (between the APs).