Not a bad idea... helps you see if it is livable...
If you are in the red your paycheck or more, you can't quit your day job. If you make it into the black.... you can consider it.
I plan to put myself on the payrole (haven't done much with it.. been busy) to track that... I want to see if my hours are paying off or if I'd do better to get a second job 
. Eventually...
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For good or ill, luck and opportunity are 90%+ preparation...
