A:AnswerYou would have to have very strong walls to attach it, it is heavy and I have a 65” set hanging on it in my house. The unit that is on the wall is large.
A:AnswerI just asked a rep on Live Chat about this and he recommended the Universal Soundbar mount: https://www.bestbuy.com/site/rocketfish-universal-soundbar-mounting-system-black/6354301.p?skuId=6354301
A:AnswerYes, the moveable bracket is placed on the wall mount. This can be moved to anywhere on the wall mount. I'm not sure of the exact dimensions but its approximately 20" to play with. Consider with the expandable bracket you can off-set the tv a significant amount anyway and this may not be an issue.
A:AnswerYour TV is 65” and you should look for mounts that fits 65”. Sanus and Rocketfish are brands popular at Best Buy and are sturdy and of good quality. Whether it is full motion or tilts is your preference.. Best Buy may be recommending these two mounts probably due to availability at the store at that moment.