Recruitment is closed at the moment anyway, so if you haven't applied yet then your application will probably not be accepted at the moment, DHK has about 2000 applications on hold.
About commuting, as DH said, you will be offered a part time contract if you decide not to live in Leipzig, after one year you then can get a full time contract as a commuter if you can prove that your commuting works fine in regards of fatigue and getting to Leipzig. Best solution usually is the 9and5 roster.