Why, thank you for asking
I do have some ideas, actually.
I think this would be a strategy thing. None of the new skills are in any way crucial, so I would save them for later on. But they don't necessarily require another skill, either. Yes, Science benefits from having seeds, plants, fish, and insets, but you don't need to learn the gardening or fishing skills to do it. I would do it after they'd be unlocked, though. Street Art, as far as I can tell so far, does not raise painting so I don't think it matters when you do it. And Social Networking is raised when you text, so I suggest if you're planning to text you unlock the skill first. It seems like a lot of things raise Social Networking though, so I would suggest being very aware of what raises it, doing it early, or for you to make it a "free skill" since it's harder to avoid now that
everyone who has the EP has a smart phone.
I agree, along with the new LTWs and Traits. The LTRs are something you'll want to take into consideration. For your ease, they are: Honorary Degree, Jock Influence, Nerd Influence, and Rebel Influence.
Yes, someone should do each degree, and I think someone should reach maximum influence with each group as well. Of course, that requirement is covered by the LTW and career requirements.