Good luck with your interview!
AirNet is a good place to work! We have issues like most other places, but over all it' good. Pay & benefits are decent, maintenance is very good.
Flying freight at night is a little different than passenger flying. For one the schedule is not for everyone. Single pilot IFR at night is not for everyone, either. You will see a lot of weather.
If you get hired (if you have your 135 time, it shouldn't be a problem) it will be a good place to find out if this something for you or not.
If you don't like it, it's not too hard to find a job elswhere.
GL