The misdemeanors shouldn't be a problem - just make sure that you let them know about them upfront. Access Authorization personnel have some latitude, so if they know about them, they will be able to adjudicate them. If you don't tell them, the background check will pick them up and you are identified as "unreliable". Also, if they have any other reason to question your reliability, the charges can be used to substantiate unreliability.
Let them know everything. Good luck.