Expanding Sonos system beyond a single Play:3 in main living area

I bought my first Sonos (Play:3) in November 2017 and love it. I’m hooked on Sonos.

I’m looking to expand the system with another 2 or 3 speakers and would appreciate recommendations and/or if my plan sounds like a good one.

Prior to buying the Play:3, the last time I bought quality speakers was in 1995 when I bought my Cerwin-Vega DX-7s, which I’m still rocking today in my home office.

Since then I’ve only acquired a smattering of lower quality bookshelf or computer speakers, and a fairly cheap 9-year-old Onkyo HT-S3200 5.1 system I use with my TV.

Needless to say, I’m loving the sound of the Play:3 and have been deliberating how to expand the system. The Play:3 does a great job filling the main living area of my house, but I’d like to take the sound to the next level.

Below is a floor plan of my main level living area, which shows current placement of my existing Play:3 (marked in pink):

https://www.dropbox.com/s/sxxheat55sjzbl2/floorplan-sonos-2018.png?dl=0

I marked in green the spots where I’m thinking about adding a Play:5 (living room) and Play:1 or Sonos One (up high in kitchen on top of a cabinet near the ceiling).

I’m also considering a second Play:1 / Sonos One for possible stereo pairing or use elsewhere in the house (or relocating to porch / patio on nice days).

The dining room and living room are open, and the kitchen is mostly closed off, but the Play:3 sound travels nicely into the kitchen.

The dining room is about 13’ x 14’.
The kitchen is about 12’ x 19’.
The living room is about 14’ x 19’ (and open to the foyer).

Thoughts on my plan or other suggestions?

Thanks in advance!