Pre knowledge of what happened in ww2 could be very very frustrating if you intend to fight in it.
When you went back with your stearman experience and were ordered to go to fly P40s at Clark Field in Oct 1941. It would be interesting to me what you would do.
You know you don't get to choose right?
But my answer is that throwing my name in the hat and volunteering in ww2, knowing how it went, I am probably not man enough. I know the world was saved without me dying, getting imprisoned by the Japanese for 4 years or having my face burned away. I am old enough to know I am not immortal.