So here are some of the brushes I use for my line art, you are free to use these settings as they are or customize them further to your liking. If you want to ask questions regarding other brushes just ask and I might make another one of these.
Download if you cannot see.
the program I use is Paint Tool SAI (the original trial one not the crack) and here is the trial ---> sai.detstwo.com/sai/
Also, I'll look into the calligraphy elemap and find out how you can obtain it and use itEDIT
<---here's the Calligraphy elemap. Enjoy