If you're willing to earn more, 4% should be fine (because it won't actually be 4%, it'll be lower, since the earned income means you don't have to withdraw 4% when you have work). If you're done for good very young, I believe 3% is much more appropriate, and even then you may need some flexibility in your spending.
It's a tradeoff, and depends on many factors (family members you're supporting, how much you hate your job, risk tolerance, ability to adjust spending, etc.)
Run your numbers through FIRECalc. Pick where you're comfortable, and pull the plug.
If I were you, given what you said about being willing to earn some more income, if you don't like your job, I'd jump ship now to what you do want. Figure out what's right for you.
And welcome! There are other threads discussing this that you can find searching the forums that might help you decide (lots of debate about 3% vs. 4%, see which arguments sway you.)