I am a 144 mm., think my husband's sit bones are a little bit wider but not much. We LOVE these saddles and have put them on all our bikes. I have been meaning to post about our complete Selle An-atomica conversion. They are the greatest.
You are only 5 lbs. over their suggested weight limit for the regular saddle. I don't think it would be a problem if you got that one instead of the "Clydesdale", especially if you are increasing your exercise activity.
"My predominant feeling is one of gratitude. I have loved and been loved;I have been given much and I have given something in return...Above all, I have been a sentient being, a thinking animal, on this beautiful planet, and that in itself has been an enormous privilege and an adventure." O. Sacks