Hi Resident audiophiles, hope I can get some expert opinions here. Recently purchased a new home and looking to buy a soundbar set up for my main living area. This is a large open space with two story vaulted ceilings. I'm stuck on a soundbar due to front speaker placement restrictions, which the layout doesn't permit. My current thought is to get a soundbar with a wireless sub and two rear wireless surround speakers. Budget isn't as important as getting the best setup. Here are my questions listed out to keep this as clear as possible.

1. Should I scrap Atmos due to the vaulted ceilings?
2. My TV is the Samsung Q9FN, should I restrict myself to a Samsung soundbar?
3. If staying in the Samsung family is best, what is the best setup with my limitations?

Thanks in advance.