I'm trying to find a better home for this question. I'm not sure Academia is a good fit. This question seems like it could be taken many ways. But I thought I'd ask before doing anything. I welcome opinions and ideas.
I think this question would probably be closed on Academia,SE with the close reason:
"The answer to this question strongly depends on individual factors such as a certain person’s preferences, a given institution’s regulations, the exact contents of your work or your personal values.
Similar questions, like How much details one should learn when studying mathematics on his own? have been closed for that reason.
A comment on the question has already expressed that it is a highly individual matter:
This depends entirely on the individual, and can only be learned from experience. Sadly there's nothing useful we can tell you beyond that. – Ixrec