I have been working on cards with a general sense of how they will all come together. Today I plotted them out on a "hundred grid" to see where I was, and how far I have to go. Ten of these will be easy (bullets and first aid) as I already have images I can repurpose. That leaves 26 that will be a bit more time consuming, and of course getting the rules onto four cards (which I think is doable)
I want to add a fifth faction so that if a player's character dies, they will have another character option when starting over. I am hopeful I can "pay" for this by reducing the number of rules cards to three (that's six card sides).