Not to scale but you can see how just about everything will be a compromise. 15X15 atrium is really in the way.
If I'm thinking right I might need 3 mini split systems?
One in front room and one in living room and a third in the atrium.
Which has 20' tall ceiling (glass) get real cold in winter and real hot in summer. The sliding glass doors do a pretty good job of sealing up the rest of the house.
If I do mini splits I'd probably better add cadet style heaters to each bedroom.
Love the mini split idea but in this house I wonder if just making the Propane system a hybrid would be best. Plus a mini in the atrium. Which may never be a well conditioned area but better Is acceptable.
Oy vey!