Speaker Help Please: Floorstanders around $1Ok to fill very large space with no sub

Considering the size of the room and this is not a system for a sweet spot sitting audiophile, Check out the largest Ohm Omni speakers.

Ohm has these Walsh 5 pair restored by the manufacturer.

https://ohmspeaker.com/outlet-store/

Klipschorns. large Open Baffles. 

K-Horns are terrific in the right space. A bit rough around the edges but really get the job done so I'm on-board with that recommendation. Also these for something more polished: 

https://holthill.com/products/von-schweikert-vr-4-sr-mkii-utmost-musical-refinement?_pos=1&_sid=268a5ebbc&_ss=r

You'll get so much more in the pre-owned market if willing to go that route. Just my opinion.

In a room that size, moving a lot of air is important.  I’d get a used pair of Martin Logan 13A’s in a heartbeat.  I’ve a friend with a large living room/ dining room set up, we placed the smallest Martin Logan ESL’s at one end and I was amazed at how even those filled that space.  I’ve a friend with a large space and 13A’s in it and it just rocks.  You just might find a used pair of 15A’s for around your budget and then you’d be killing it. Those things are monsters. 

there are so many options IMHO better than ML speakers