This is a job for your horizontal bandsaw and tig (or other) welder to fabricate some brackets. That is how I would approach it. Definitely some sensing, measuring and designing to make sure you hit 2 studs. Integrate a couple of the 4-5" GRK RSS x 5/16" lag screws (T30 driver) into each support in your design to hold everything to the wall. If drywalled, you have to think about the pressure on the face of the wall at the bottom corner. While 1" flat bar might be sufficient from a load standpoint, it might be wiser to go to 2" to keep it from indenting the drywall as its loaded up. ~90lbs per support isn't out of the question. Don't get tricked into drywall-only anchors purportedly rated for same or greater, as those assume flat artwork with no moment arm holding them out away from the wall...
