Your farm sounds great!
I don't have any kids, so I can't help there, and my hubby absolutely *loves* the Neanderthin diet. He insists on drinking an occasional Guinness, and his copius amounts of coffee, but other than that, he's really good.
About the pets. I have been feeding my 3 dogs and 3 cats a raw diet for over 4 years now. I more or less follow the BARF system (Bones And Raw Food). Your dogs can eat any bones that are RAW and be very healthy, the cats to, but I usually grind them up. You will save loads of money on pet dental care too.
Here is the book that started me off.
Give Your Dog a Bone by Ian Billinghurst
As for cost, I found a local meat packer that allows me to get all the bones I can carry for free! Check your local meat packers, slaughterhouses, butchers, and heck, farmers and deer hunters that process their own meat, for bones and off cuts on the cheap/free. It significantly reduces your cost. (if any one tells you dogs can't digest pork bones, they're wrong!)
I feed my 3 65lb dogs each about 1.5lbs of meat/bones daily. They run loose and are incredibly active, so they stay at a good weight. When they get more sedentary, like in the hot summers, I cut it down a bit. Just watch your pets weight and adjust accordingly. The staple of their diet is chicken leg quarters; bones, skin and all. They also get turkey necks/legs, pig feet/neck bones, leftovers and scraps, ground veggies, eggs, ect. Really, whatever you have leftover, feed to the dogs.
I make food for the cats out of the cheapest cuts I can find, chicken backs, necks, leg quarters, fatty pork, fatty hamburger, liver, gizzards etc. I add fish oil for flavor. My really old, formerly unhealthy and allergic cat looks better now at 15 than she did at 8. It's amazing really.
I think a raw diet is way cheaper than the expensive, specialty pet foods. And healthier, too.
Good luck!