I had mine in a 12' x 13' room, good corners.
No, it was not big enough. May work for you but I could not make it work, even after the normal tweaks:
Crites XO
Pipe insulation to seal them into the corners
Rope calk putty on the horn
3-watt SET (plenty loud for me), 150 watt SS, 100 watt EL34
Blankets and pillows all over the place
Resistors in line on the tweeter and mid
I could not get them to integrate so close to them. Not saying it can't be done but I'll believe it when I see it only.
As far as selling them if you don't like them - Only if you are patient and live in a bigger town. They are huge and you need to find a local buyer.