I will answer this in two parts. As for the steering rack, they sell a rack straightener, I think it's $50. Basically its two pieces of steel that squish the plate straight. It wont be perfect, but good enough to get your measurements right again. Make sure your bump steer is right. Your tire rods and lower control arms should be at about the same angle. They do sell thicker rack plates now, but if your not bending the rack plate, something more important might be bending.
As for the clip, I have heard as long as the bend is beyond all your suspension points, it shouldn't effect the handling of the car.
Senior guys can help me with this, not 100% sure.
But, I'll say this. If I just bought a car and I'm not racing it until next season. I would want to start fresh with everything right.