Oh no. Looks like all your telephone lines are wired by analog wires, cannot carry ethernet digital signal.
Then, can you pull a new ethernet wire to where you would like to place the second AP11? If not, I am afraid you have to resort to upgrade the entire network to accommodate MoCA.
AP11 can extend wireless with another AP11. This setup is never optimal. You can try this method of connection, then you will likely not get the advertised speed, which misses the whole point of upgrading the WiFi.
G3100 has its own problems, for instance, capability issues with IOS devices.
G3100 only provides a single WiFi point, if you need another, you still need to buy an extender along with it.
To fully resolve the root problem, you probably need to upgrade the wiring so you can wire anything you want.