I think that new photographers get too wrapped up in gear. I was guilty of that and it nearly ruined my career, keep it simple and develop your style with as little gear as possible. The 50/1.4 is a very good lens and a 100L would compliment it greatly. I would sell the others and put it toward a 35/2 IS which I'd turn into a 35L only when you generate revenue. The previous 35/2 is not a great lens and a newer photographer would be tempted to shoot wide open and get soft images. That lens is just not made to do what you're using it for. The 135L is a beautiful lens but the 200/2.8 is about half the price used. My best advice, start thinking like a businessman and invest smartly in gear.