I'm not making any money from YouTube so my opinion doesn't count much, but the best conceptual advice I could give would be to make sure that the two sides of the equation you are trying to balance can actually match.
What I mean is: anyone can make a career out of a low-paying or unpredictably rewarding source like YouTube, because let's be honest, that is what it will be at first. But if your outgoings each month are high (depends where you live and your financial commitments), then it's going to be tougher to achieve your aim of your main source of income being YouTube.
It's easy to look at big channels with millions of views a month and say they're making bank, i can do the same. But the questions are : Can you? How will you? Will what you make be enough?
I have worked out what I would need to do YouTube near enough full time, and it will be difficult to achieve. My long term aim is to have YouTube be a proportional part of what I earn, merely one income stream of many.
This for me is the safest approach, because as we have seen with Ad-pocalypse, the game can change at any time, and probably will.
Good luck!