RT-AC66U with other routers as APs

Current hardware

ASUS RT-AC66U router
Netgear WNDR3700v2 router
Netgear WNR2000 router
Netgear GS108T router

All of the rooms in our house have wired ethernet connections.
The AC66U is located in the central part of the house currently. The WNR2000 is setup in the back half of the house as a switch. The WNDR3700 is going to be placed in the first half of the house in the same configuration. The GS108T is in a closet used to connect the majority of the connections that are running from each of the wired rooms.

How I would like the two additional routers to be setup is:

1. As switches
2. As wireless APs

To do this do I simply need to set those two routers up with the same SSID as the main router? Do I need to hide those SSIDs?

I understand that the WNR2000 only supports 2.4Ghz which is fine. Our wireless clients normally connect on the 2.4Ghz channel anyway. Or I should say at least anything that is mobile and would end up in the back half of the house. Anything else that would connect to the 5Ghz channel is immobile or unlikely to move anytime soon.

Any help would be greatly appreciated.