So far it's looking like you have a nice campaign setting. I'm personally glad you dull down the transhumanism of the setting, although, again, this a post-apocalyptic game. But that's my own feeling towards that. Post-apoc can be done in the huge, so much was destroyed we're just trying to get our feet back under us, deal, or it can be done with more or less historical perspective. History shows that just about every civilization has at some point in time lost massive amounts of its history, its technology, and even its infrastructure (read up on what Attilla the Hun and others did to the Roman Empire for a clue).
As for the rules themselves, I'm not familiar with running Mekton Z, so I can't make much comment on it. However, I do understand that Mekton's 'god-stat' carries over somewhat into the later generation of Jovian Chronicles.
If it were a choice between the three arrays of possible character generation, the third array makes the most sense.
However, I would humbly submit my own opinion that 'charisma' and charm are not mental abilities you pick up at generating, but are moreorless determined by how a character is played. You can have a very high Charisma in D&D and get away with a lot of stuff that, in reality, you wouldn't likely get away with in the real world. So if you're going for something halfway between Adventurous and full-blown Cinematic, you could keep it. If you want to lean a little further towards realism, I would think of other ways to have folks deal with interaction with non-player characters.
God bless.
-Brandon F.