[TealJade]

If I remember correctly it is like level 20? Your best bet is to search the name of the class, I know this has been asked before.

Crime payouts get better with level, I know I make more on ponzi schemes than I used to.
As to easier, not sure but it seems like they do.
I read you should do crimes that take less than 1/3 of your energy for the best results.