I was with you all the way up to 'defeat all creationists' and 'grow pot first'.
I'm not saying I disagree with you, keeping religion from getting a foothold in a new colony is an imprtant step in ensuring it's long-term progress.
Unfortunately though, you sound like a nutter. No offence.
Who exactly is going to fund this? It'd cost orders of magnitude more to send people/food/clothing/farming supplies and that kind of money is currently only held by private companies whose only interest is in making more money. As far as I'm aware there is currently no world government actively pursuing human exploration of space beyond Earth orbit so this isn't likely to happen within our lifetimes.
If I'm wrong about this then I'd gladly volunteer to be in maybe the second or third group of colonists sent out there (wouldn't want to be on the first rocket, need to make sure it'll land safely first). Who on Earth (no pun intended) would pass up the opportunity to be amongst the first Humans ever to live on another planet. Even if you didn't survive past the first generation or two it'd still get you into the history books.