I am about 177-180cm tall. The Holdsworth at 58cm seat tube is a bit tall (standover height at 85cm and I can jump down the saddle, but need to be careful :) ).
As said I have a 90mm stem on a 58cm toptube and I feel it is too long.
So a 57 with a 100mm should have more or less same problem. That's why I think 56cm with 100mm stem should be right.
I am about 177-180cm tall. The Holdsworth at 58cm seat tube is a bit tall (standover height at 85cm and I can jump down the saddle, but need to be careful :) ).
As said I have a 90mm stem on a 58cm toptube and I feel it is too long.
So a 57 with a 100mm should have more or less same problem. That's why I think 56cm with 100mm stem should be right.