AP1300 has mesh functionality but not an hw button to trigger.
Needs to be triggered by CLI with this command:
ACTION=released BUTTON=wps SEEN=5 /sbin/hotplug-call button &
I personally use a mesh network with both Cirrus (central node) and Convexa-b (3 routers) See this thread:
AP1300 also has bluetooth in 3.217, at least if you buy the version with the LTE modem.
Support for mesh and bluetooth is not continued in the 4.x firmware, because of closed sources.
Thanks a lot,
Gianluca