For purely selfish reasons i would encourage you to post your campaign journal.

Not for anything related to selling more of your content but because I love reading campaign journals.

On a related note i'd say that if you are trying to just get your content out there and aren't expecting to make a pile of money use the one that gives you the smaller % but has a higher chance for you to sell more copies.

But if your objective is to make some extra cash go with drive thru at least you'll make an extra 20% off each sale.

It does seem like you've put a lot of time and effort into this project and i hope it works out for you. wherever you do decide to sell it i'm sure it will be well received as it sounds like it would be fun to play.