Well that's up to you. I'm just letting you know that the procedure to shorten working cuff sleeves from the shoulder is risky period...very risky when done beyond 1". If you've had it done before by a good tailor and you're happy with the result, then by all means do proceed. If you have only had sleeves shortened from the hem and you're unsure of the tailor's skill, I'd proceed with caution. Also, if the sleeves are that long, are you sure the jacket is the right length? Usually a maker who makes working cuff sleeves on RTW jackets is pretty confident in their measurements/cuts. You see this with Tom Ford.