I just moved from a 56cm frame to a 54, went back to an offset seatpost, and went to a 120mm stem (could probably go 130mm easily). Although, my last stem was a 110 with -10 degree, new one is 120mm with -6. So in the end, the reach is nearly identical due to the less negative angle.

I really like the smaller frame with offset and longer stem with 15mm spacer under the stem. I have a much better stretched out, lower slung type feeling/more aero setup than previously. Probably gain nearly 1mph with this setup over the old just due to the body position. I race, so this is important. I will sacrifice some comfort if necessary, but I actually don't feel less comfortable at all like this.

KOPS...don't care about that. I've had two "pro" fittings, both people had me all over the place using KOPS, or other ideas/theories that felt like garbage and I ultimately moved my setup around to a better setup that generates more power and less fatigue. Never getting a "pro" fitting again. They are only as good as their "theory." Which pretty much isn't based at all on power/aero and better performance. Retul doesn't even talk about how they determine a proper setup and what proven methods they use to generate more power and better performance while maintaining some comfort level. Unless someone can show me proven power gains with a different setup and I still feel comfortable...no thanks.