Open baffle for half critical listening half home theater setup?

[cheapvega]

Right now in my TV room I have a pair of Snell E/IIIs and a cheap Pioneer receiver. I don't really like the sound but we mainly watch TV on it so it doesn't bother me. I would like to start listening to more music in this room though. It's probably about 18x12' with what I'm guessing are 11-12' ceilings... floor to ceiling windows and hardwood floors (big L couch and rug though). TV/speakers are on a narrow wall.

I have DML panels in my kitchen which is my "main" listening room for now, and I also have some narrow field monitors. Between the two I prefer and have become accustomed to the open soundstage of the DMLs. I don't think I want to do another set of DMLs for the TV room, but I'm not completely opposed.

I guess my main questions are what considerations should I make in choosing drivers for this use. I would say my goals for it are:

• Wider soundstage
• Similar low end extension (~40Hz)
• High efficiency (I would like to use my ZOUDIO as the amp)

I am thinking about some GRS Planars to run down to maybe 800-1000Hz and one of the many OB friendly 12s. I feel like with the narrow room, all the reflections and good XO setup (I will run active) beaming from the woofer shouldn't be an issue. I am also redoing the setup in the kitchen so I could repurpose a pair of the DMLs coupled with a bass driver. I don't want to run a center or rear channels and this is a low dB setup- we mainly watch TV when kids are sleeping and I don't like to listen to music super loud these days. Just looking for insight/advice on such a setup; I feel like it's very common.