Thanks for your answer. 
I upload 3 images, one with the current measurements on my bike, on your drawing in red with a 50mm stem, and another with the factory measurements. And carbonada measurements.
I think that size L may be fine for me.
What do you think?
Not sure about the comparison of the frame, but for the build I will do, the L was 18mm less from saddle to bar.
And the drop was 18mm more.
Quite a big difference compared to your current measurement.
And for you assuming a 760mm for the saddle height.
You would have 702mm saddle/bar.
And a 78mm drop.
All this with a stem of 40mm and 3cm of spacers.
So if you move your saddle 17mm forward and add a 18mm riser bar or more spacers you should feel at home with an L
