Generally, being self-employed is preferable to working for someone else, regardless of the benefits. If you are an entrepreneur, you can make as much profit as possible and the profits will still be yours, whereas if you work or trade to get paid, you are dependent on your employee and any profits made will not go for you; the only thing you get is your agreed salary.
Although both have significant risks, being on your own is preferable because the risk can be managed.
Both are good options - but if your job ends - what are you going to do.
So having a small side hustle is a good option. You learn some management and your vision widens.
I think having both side by side is the best option
But if you do have that 8-5 job then having more things to be done after those hours would really be entirely exhausting thats why it would really depends if someone would able to bare out
on spending more hours on extending their work or things to do after a long hours of work but for the sake of goals and targets in life then its not really bad to have those considerations.
If you do just know on how to adjust up your time and have still those balanced lifestyle despite of too much hours engagement on work and business then it should be fine.
There are some sacrifices which is needed for us to reach our goals yet its normal that it wont really be an easy path to take.