You need a lot of time for trading especially in the beginning phase because you have to study a lot. Maybe you can start with a training account and not directly with real invests. But I think its possible also to do it with a job e.g. in the morning / evening / weekend.
I appreciate if somebody is able to handle both job and trading together. If someone is capable to do both at the same time he will make more and more money in less time because of the double incline from the job and from the trading, but I think that money is not everything in this world.
One should not be so busy in making money. Give some time to your family and enjoy the life instead of making yourself a money making machine.