How to fix 90x45 stud to brick wall?

Six7

Hello,

Need some advice with the fixing of the stud to the brick wall.

Brief: Living room, two brick piers with a brick wall and shelf on top with a void, wanting to panel it up, 3m ceiling height and panels from floor to about 2.6m high, decorative panel on top.

The vertical stud will not have a top plate due to the mount for the TV will be near the top (recommended fixing to vertical and not horizontal). TV is a whopper of 85" and weighing about 58kg + the heavy-duty mount.

The verticals will need to be fixed through the 45mm edge of the stud, most of the 8mm fixings aren't long enough so it will need to

be recessed unless I go up to 10 or 12mm screws.

Heavy-duty - Masonry screws for the two verticals and the rest plug and screw?