If you dont know the site, play around with https://geometrygeeks.bike/. Will let you compare bikes' geometries, it's extremely helpful.
Height alone means very little. I'm 184 and i now ride medium frames because i have long legs (saddle height of c.81cm). I also have fairly long arms, so i can fit myself on large frames, but i have a short torso, so i'm actually more comfortable to push watts on a medium than a large, with fairly high stack because my saddle to bar drop is pretty extreme. If in doubt, always, always go smaller rather than larger. I just sold a giant propel in L that was always a tad too big for me. Tragic, because that bike was amazing. Had i bought a M/L i probably would not have upgraded.
If you ride on the flat a lot and are comfortable in aero positions, probably best to take a 0 offset post, will get you more vertical on the BB, a la TT bike.
Thanks. Unfortunately it's quite hard for me to assess since my other bikes are completely different ahah. Will try to get access to a canyon ultimate L size. Apparently they have very similar geometries.
I'm pretty comfy on the endurace for example L size, which is basically the same of all endurace. I know this one is more agressive, but just wonder really the difference on those 2 things. 110 stem and the seatpost setback. Bike size is definitely the 58.
I can imagine though thst with 0 setback I can still play with the seat sth like 15mm back. Will see but place the order in any case.