Please understand, I was not trying to rain on your parade. I've built quite a few racing bikes and I am always very careful, the first time I ride them after making major changes. I've been bitten a few times. What you are doing is radical rather than progressive, so the risks are greater. A friend of mine once said 'every time we fall off, we could be killed'. I never really think of it like that - however he is probably correct, especially if you don't know how to get off safely at speed.