A:AnswerI biased mine so that the release catches are not visible below the TV. These brackets have plenty of holes. Be sure to use all four holes in the TV and the correct bolts, as there are plenty provided to choose from.
A:Answerthere is no tilt adjustment for the wall mount-- it is mounted flat but it allow about 2.5" for you to reach your hand back to plug in any gaming equipment, etc. It looks nice too, flat against the wall with no tilt.
A:AnswerI would use the aluminum studs. I've placed adjustible book shelves in offices that were built with aluminum studs, loaded them up with very heavy books, and they are very strong since aluminum studs are reenfoirced because of the drywall on them.
I really think you would have less strength using just toggle bolts and drywall only.
A:AnswerNo, it only tilts once the bracket has been installed to the wall. So make sure you install it at the exact height you want the TV to hang. It can be slid slightly left/right once installed and the TV is placed with the hardware onto the bracket (maybe 3" or so either way). But not vertically.
A:Answerin short : probably so, although the other holes SHOULD be spaced so that at least a couple more holes hit a stud (assuming you have standard spaced studs @ 16").