Hi Flow—
1) I found that 1 of each Attack and Chaos card is ideal—though if you think certain events should be more common than others, you may want to throw in an extra of those—something like Bite may make for more realistic play, and having multiple Carnivore Attack cards would make for more challenging play. What I found is that Item, Weapon, Dinosaur, and Vehicle cards are the ones that need multiples in their respective decks—items like Keys, Medical Kits, and Food should have at least 2 if not 3 or 4 cards, ammunition and dart gun cards should have multiples, and Jeep Wranglers should be more common than other vehicles. If you want the main film characters to show up more than the ancillary characters, having an additional card of each of the leads is also a good idea. For Dinosaurs, any animal that can have a pack should have at least 3 cards—I ended up printing 5 Compys because their pack mechanic can really multiply, and 5 Raptors because I wanted them to be more common. I meant to put a guide together for printing, but I've been busy on some other projects. I'll try to get around to that at some point soon.
2) There are some maps, character cards, item cards, and weapon cards for the Sorna version that I completed for the alpha version of the game, but they're pretty out of date and don't fully match up with the updates in the system and the designs are quite out of date. There is a faction mechanic on Sorna (Hunters, Gatherers, and Scavengers) with the human element being as dangerous as the dinosaur element, taking inspiration from a combination of the Lost World film and book. The mechanics of Sorna would need to be significantly different, with each faction having different win conditions (e.g. the Scavengers of Dodgson, King, and Baselton having to collect eggs and get off the island) and while I'd love to get around to it sometime, it's really a full project in and of itself. My ambition got the better of me. Some day!