Keep an eye on the edge that was the corner on the angle. Billet isn’t necessary, but the forming process of the angle does make that edge weaker. If I was going to fabricate those I would use two pieces flat steel and weld them together.
Something else to consider, you could run a fillet weld on the inside edge of that bracket. The fillet would add a nice radius for strength, and the heat might remove some stresses from the forming process.
