I wish to purchase 3 devices mentioned above(Archer AX10) and use EasyMesh with Ethernet backhaul as shown in the photo below.

Questions:

1: After enabling EasyMesh, will the wired devices connected to router 1,2 and 3 be on the same subnet? Will they be able to see each other? Will I able to use a wifi printer connected to a different router?

2. Will I have 4 lan ports free on routers 2 and 3; and 3 lan ports free on router 1 after EasyMesh is enabled? (I read in this forum that during EasyMesh ethernet cable has to be connected to the lan port but will the 4 lan ports be free after that, with ethernet cable in the wan port and the ethernet backhaul active.)

3. What happens to the Guest wifi after EasyMesh is enabled? As far as I understand it, EasyMesh does not work on Guest wifi, but what about setting up and enabling/ monitoring guest wifi on all the routers? Will it be done individually on all three?

4. If the answer to the first two questions is yes, then will I be able to connect IP cameras(VIGI C400HP V2) and the NVR(VIGI NVR1008H V2) via ethernet as shown below and have them be on the same network with EasyMesh enabled?

PS: I have represented only wired devices on the diagrams.

Thank you for helping!