In the past month and a half i've made over 100k arbing different markets and developing a very hard-to-beat strat. I submitted my resignation to my full time job last week . Wish me luck.
Long live crypto.

Update and some answers to your questions :https://bitcointalk.org/index.php?topic=5321029.msg56477603#msg56477603
This is o brave and also hard option to take. However, once you take it, you do your own risks and also responsible for it.
However, I also believe that if you really focus on trading (whatever the strategy, for arbitraging, scalping, and other types of trading), if it is serious and full-time on it, I believe you can do it. And the result may be more than the salary working offline.
Wish you luck.