You will learn a lot flying as a CFII. It's a good place to start. Cargo is one way, not the smartest way. My first day on the job flying Barons"running checks". The weather was solid thunderstorms with no radar. I scared myself to death. I walked into the office at the end of the day, and my chief pilot asked me, "You do have experience flying in thunderstorms don't you"?
I replied, I do now. I drove home, concerned about how long I might live doing this day after day. I survived and so will you....
Just remember one thing------don't push it too far, and when you do, learn from it and don't do it again...
Good Luck
Falcondriver