1) Remember that karma is simply the sum total of the consequences of all your own past thoughts, words, and actions. How that plays out varies from person to person depending on the nature of those consequences. For you, they may be a nudge; for others, they may be a crowbar upside the head.

2) I'd look to the 4th for that.

3) I'd read it as saying that it would work, but that it would turn out to be a short-term gig and involve learning some lessons, not all of them pleasant.

4) Yeah, that looks elected. Interesting.

5) Hmm! Also very interesting.