After taking a peek at your mod pics, my initial concern is that the drop on the jumbo worn single strap (or cross-body) falls too long on you for your petite frame. You already know me, I am jumbo-classic-flaps Gal all the way!
However, having seen your mod shots and knowing more about your collection, plus taking into account our previous conversation RE: the Canadian dollar, I personally voted on the M/L in caviar leather for you. Although you also know my ADORATION for lambskin (and jumbo CFs, lol) one thing I inadvertently failed to mention to you was that my 1st (and 2nd!) classic flaps are both in caviar leather (chevron caviar, but caviar nonetheless). It was not until I became more comfortable with having a classic flap, in general, that I felt comfortable enough to invest in lambskin classic flap territory. In fact, I purchased a lambskin wallet first, definitely to satisfy that lambskin "fix", but also as a lesser "risk" option than diving straight, 100% into jumbo lambskin classic flap LOVE (You Go Girl, dear "ceedoan"!!
) Well, as you know my story, the rest is history and I do not regret purchasing my jumbo lambskin CFs ever since. However, I do know how difficult this decision has been for you. We all have our own unique Chanel journey. I wonder if the decision would feel less stressful for you if 1) the price point was slightly lower (M/L) and 2) the durability of the leather slightly higher (caviar leather)? The last thing this experience should be for you is one that is keeping you up at night and causing great distress. And it is for your birthday to boot!! A VERY special day, indeed! ✨ All in all, my humble opinion, as I have enjoyed getting to know you a bit better via an earlier thread you posted. Please do keep us posted on your decision. And I am sure this includes many when I say, I cannot wait to share your joy through a Reveal thread!
Take good care...