Welcome to the forums!
Sounds like you are off to a good start. We have had a number of folks join recently in various 4-person configs (N's, quads, etc.) so hopefully you will find information and conversations relevant to your situation.
You may also like to read some of the threads on "cohabitation" (you can do a tag search if you are interested) - which is one of my personal topics of interest.
Thanks for joining us.
Me: poly bi female, in an "open-but-not-looking" Vee-plus with -
MrS: hetero polyflexible male, live-in husband (21+ yrs)
Dude: hetero poly male, live-in boyfriend (3+ yrs) and MrS's best friend
Lotus: poly bi female, "it's complicated" relationships with Dude/JaneQ/MrS (1+ years)
TT: poly bi male, married to Lotus, FB with JaneQ
VV and MsJ: bi-women with male primaries, LTR LDR FWBs to JaneQ
My poly blogs here:
The Journey of JaneQSmythe
The Notebook of JaneQSmythe