Floorstanding Speakers - 12'x14' Room

I have a 2-channel audio system which I have moved from my basement to my main floor living room. This living room is 12' x 14' with the system along the 12' back wall. The living room has a cathedral ceiling which goes from 8' on the left side to 12' on the right side. Also the right side does not have a side wall since this is the opening to my hallway. Experimenting with my existing bookshelf / subwoofer combo has revealed that I must adopt a toe-in configuration to avoid early reflections from the left side.

I'm interested in replacing my existing bookshelf / subwoofer combo by a pair of floorstanding speakers. However, I don't want something too big where I will not be able to control the bass.

By the looks of it, the speakers would be about 9' apart and 2' from the back wall. On the right side, the speaker would be about 1.5' from the side wall.

So far, I've narrowed down my possibilities to the following:

Gershman Sonogram
Totem Forest
B&W 804S
Definitive Technology Mythos STS
Aperion Intimus 6T
Duevel Planets

My power amp is a Linn Akurate 4200 and I listen to all types of music except country / western. I what something that will sound great low volume but that can also dish-it-out at high volume.

Would all these work with my living room? Any other recommendations?