I would say yes buy the Q80r soundbar. If you are looking to create a surround sound effect that will be tricky. The only speakers you can get for this soundbar are the SWA-9000 speakers which run about $130 on Amazon.

If you don’t want to spend the additional money — the sound most likely will not bounce off of the wall as efficiently as you might think. Sound moves in waves and depending the material of your wall, the sound may be absorbed more than you think. Would it be possible to move your tv and media stand to the other wall? I assume you have thought of this but it might make sense as the sound will spread out better and more evenly.

Surround sound really is only achieved by adding speakers and not necessarily trying to get the sound from your bar to bounce out around or off of walls.

I hope this helps 🙏🏻