If you gave me the choice I'd go for not too much hair. My ex-husband had a hairy back (not a turn-on, but not the reason he's ex) and the current OH hasn't got much hair on his chest. But I do find bald men attractive and it usually seems that the more hair there is on the head the less there is on the chest and vice versa. Does it slip?
As for my age, well I retain a woman's right to discretion but I won't see 30 again, or 40, or... ok, I'm not what you'd call young.