Good evening guys, I have a big dilemma. I'm 183 cm tall, with a saddle height of 88 cm, and I'm really undecided whether to go for a size 54 or 56. At the moment, I'm riding a Specialized Diverge E5 with a 10 cm stem and an Aethos size 56 with an 11 cm stem. Is there anyone with my same measurements who could help me choose?