Running script suggests that you choose either Wang Xizhi or Zhao Mengfu.
These are all soft pens. Of course, if you choose to practice hard pen, I suggest you study the copybook with a pen. The effect is still ok.
Because the artistic appreciation value of Dong Qichang font is greater than the daily practical value, I suggest that you can learn from it if you don't plan to engage in calligraphy for a long time.