My 25.2 Vegas has the same set up over the door on the TV I don't see any benefits other than you could swing it left or swing it right it doesn't actually drop down any I think pulling it out further would make it more difficult to watch.
I just ordered the magnets yesterday they won't be until Friday will try to put them on over the weekend, I don't know if they will work for sure if they do I will post what I bought.
I bought 25lb should be strong enough I will be putting two on thanks for the inquiry Robert
Thank's for the warning I will probably only use two of them and they actually Mount on the back rail and then over the rail there's a plastic cover so that will take some of the strength out of it I'm sure. I noticed on the 2017 they use to round magnets the one I purchased is actually like two or 3 inches long and fits in the rail 2017 mount right behind the TV on the mount.