Well depending on the orientation, I would think it would be an easier load on the bracket hanging from the ceiling. Being wall mounted would place different leverage against it. In any case, I don’t personally think either one will give you troubles. Pretty sure the 10lb “maximum” rating is a super conservative rating so people don’t hang really big speakers or heavy stuff. Still, you’ll need at least one stud to screw into. If you can’t get placement right where you don’t have studs, use screw in anchors, or toggle screws. 7 pounds isn’t that much IMO. FWIW, my old surrounds weighed like 35lbs and we’re wall mounted. If money isn’t a big factor, I might personally spring for the 1000’s. Even though there’s less content, I still think it’s worth keeping the weakest link strong as you can. It sure of your room size, but IMO a subwoofer upgrade is in order too. Curious, any reason to not go with x.x.4? Maybe just getting your feet wet for now? Some atmos is definitely better than no atmos so nice work on moving forward!