Harbeth vs. Focal - Apples and Oranges...

I am thinking about replacing my Harbeth m30.2s with Focal Sopra 1s.  I realize they are very different presentations and I think I am looking for more incisiveness that the Focal sound offers, though I do love the Harbeths. 

Particulars are this:
Supplemented by a pair HSU Research ULS15 MK2 subs. I will retain these (unless...see below)
PS Audio BHK 300 monos and BHK preamp
Modwright/Oppo Sonica DAC
Anti-Mode 2.0 Dual Core
Fidelizer Nimtra Signature Server/Roon Core

Listening room:
12 x 14 for near field (20% of my listening)
Above opens through double doors to an open space living area where I do 80% of my listening.
Here I sit 18 ft from speakers. Far wall is 36 ft from speakers; open area extends to an approx 1000 sq ft area dining/living area.

Questions:
Understanding that Focal and Harbeth house sounds are vastly different and a matter of subjective choice, I have a few questions:
(1) Will Sopra 1 + subs adequately fill the 18 ft listening position?
(2) Would I sacrifice LF by going to Sopra 2 floors-tanders and losing the subs? Would Sopra 2s fill the larger space or...
(3) Sopra 3s for larger space? Sopra 3s to big for the 12 x 14 space? No subs...

Thanks for any and all comments...

(The back story is that I sent off my m30.2s to replace a blown tweeter and pulled my old Focal 706V bookshelves from my closet. Although the sweetness, etc of the Harbeths was not there ($750 vs $6000), the Focals filled the larger space with such ease that I was astounded. Much moreso than the Harbeths. I had last listened to my Focals with my old system - modded Hafler amp and pre and no subs. What I heard from the 706s blew me away, despite some obvious shortcomings compared to the Harbeth.)