TP-Link mixed use

I currently have 2 TP-Link AV200 units between the basement and 2nd floor office to extend my lorex security system's remote function. For that purpose its been working just perfectly for awhile. Now what I want to do is connect another access point for my wifi between the 2nd floor office and the family room.

I'm looking at the TP-Link AV1200 for the AP extension and was wondering if I could still use the AV200. My thought is to place one AV1200 in the 2nd floor office which ties into the...

TP-Link mixed use