@swamytk
With a 23 feet wide wall where the TV is hosted, the worry of side wall reflections are not there.
But do pay attention to the 12 feet distance between front (TV side) and back (seating side) walls.
Your stereo speakers are down ported, if I am correct. They are relatively benevolent when it comes to placement.
Ping someone local and borrow a rear and/or front ported BS speaker pair.
Then hook it up to your IA and hear the room response at various speaker positions.
Then extrapolate how FS may excite your listening space.
Cheers,
Raghu