A:AnswerNO!
My big problem with this mount is that it must be centered on 16" studs. I have a stud on the center of the room, so the mount is 7"-8" off center. The mount will not let me center a 77" TV, it tilts too much. Only buy if you have 16" studs that are near center of the location where you want the TV.
A:AnswerI used a 3/16 drill bit for the 2-1/2” tapcon screws
I put a picture of all the mounting hardware I had left over after installing. They give you multiple screws to use depending on the tv. Unfortunately, I couldn’t get a picture of everything since it’s already hung on the wall. They also give a little level bubble to help keep level.