Is there a reasonably well researched list of behaviors that correlate positively with lifespan?

Depends on what you'd call "well-researched" but, unfortunately, most of it is fuzzy platitudes. For example:

• Do physical exercise. But not too much.
• Be happy, avoid stress.
• Get happily married.
• Don't get obese.

and most importantly

• Choose your parents well, their genes matter :-P