How Should a Men's Wetsuit Fit?

[@spartt4360]

Hi My chest is 110cm, waist is 82cm. I bought size M which feels too tight on my chest as size M chest is 99-104, but waist fits perfect. If I to change it for Large, chest should be fine, but waist will be too big as L waist is 84-89. What do you recommend, change for loose waist, or hope for chest/shoulders to stretch? Note, I only tried it in a room, I heard it loosens up in water too