I have a close friend who is fully Deaf and he does have his concealed carry permit. His brother, a CODA, was the interpreter for his class. To my knowledge, he didn't have any problems with having an interpreter; however, I will double check that.
The printed card for traffic stops would be a good start I think. Just include it with your other documents you hand to the officer. As far as a situation where you had to use/or draw your gun, the lawyer who conducted the legal portion of my CC class said you're better off having your gun back in your holster when the responding officers arrive - not on the ground at your feet and definitely not in your hand. Others might disagree and that's fine, I'm just passing on some advice I was given that might be useful.