Costochondritis & Working out?

I'm considering joining the Air Force and I know I would have to go to BMT. But about two months ago I was diagnosed with costochondritis which is an inflammation of cartilige near the ribs, breastbone, and sternum. I sometimes get shoulder pain and chest pain but the condition is benine and not serious I was just wondering would it be a good idea to join with this. I'm willing to work. Some other details(I still smoke cigarettes and I know that is something that irritates the condition).0