Context: I'm a Player, Arcanist level 7. I have 2 weeks downtime which I want to optimize to the fullest!
According to RAW, the maximum crafting time for magic items is 8 hours each day.
Another 8 hours is sleep (which I'm not 100% sure about, since penalties for being tired ain't too bad for downtime).
This leaves 8 hours (or more, depending on the sleep part) for other activities. The question is: can I spend those remaining 8 hours on making Magic Points (earning capital activity)?