What is the suit for? Job interview? Presentation? Or is it just for everyday at work? If it is for an interview or presentation, I say wear the suit, because more than likely you’ll be using your arms a lot, and the sleeve length won’t really be all that apparent. Long sleeves (as long as they’re not obscenely long) are better than short. If it is just for everyday work attire, go without the jacket, and just get it tailored. As soon as it comes back from the tailor, you’ll be spick and span.