To everyone saying it's way too long: I agree, I already noted that. It's a nice unique piece and part of the history of what I hope will be a great one man brand. Im just happy to support. Also, the cost of shortening it would be more than what I paid for it so it's just going to be part of my collection until I get fat.
Edit: it was also a good lesson for this leather jacket novice to understand that even though key measurements are the same, two jackets will fit differently
Wear it anyway. There are far more egregious fit errors. Kudos to you for picking it up.