Carlos, here's a thought on 'penny-pinching' possibilities:
Perhaps it's practical for your source to laser cut and drill the pieces to your specifications (and the unique spacers) and leave it to the SOC purchasers to 'finish' the preparation for painting, powder coating, etc...Most of us have access to a grinding wheel to camber smooth the edges...and I believe all of us think your tow points are a terrific idea.