Hi folks

I just moved to a new apartment with Verizon Fios. It’s big (2500 sq feet) with concrete walls so the fios guy put an extender in each of the two bedrooms- the router is in the living room. 
 

my question is: what is the best setup? The router and both extenders have lan outs of course. 
 

my (5 year old) equipment:

sonos extender

6 Sonos one

1 Sonos playbar

1 Sonos floor bass unit (I forgot the name but it’s big and heavy)

and I am thinking of adding a few more speakers once everything is set. 

should I:

plug the Sonos extender into the router and one rj45 into 1 play one - living room (wired)
Two play 1 into each extender in the bedrooms (wired)

the playbar and bass in the dining area (not wired)

three play 1 (not wired)?

thanks for your input