Mix and match and just do what you feel mate, write for yourself and not for the audience. You're a great writer and you've had an obviously interesting and varied life. People will love to read about it.
Go for it, I watch others and consistently great posts will win, even if they are short form when you've built up your readership. Youve got a huge wealth of experience to share!
I love the charity work posts and Im really keen to hear about the aerospace stuff....and especially why you think we need to return to the moon!
As for the posts about the private military contracting, like any other subject, there will always be people who are going to kick off,(perhaps more here than average lol), but thats life. Try being an atheist who was invited to ghost write on a Pakistani national newspaper's online blog....just do whtever you feel like at the moment in time!