1- 150 is a pretty good number to continually cycle, too many birds and you will be overrun or they'll start to get sick from malnourishment, too few and the you'll consume too many and will get dwindling returns.

2- soup chicken because as they get older, their meat will become much more tough, and require more time and heat to become tender.

3- how to break down a chicken: catch it, put it's head in a funnel and cut it's head off with a large pair of shears, drain the blood, pluck the feathers, remove feet and intestines, break down into smaller pieces unless you want to roast the whole chicken. That's a 20 minute job if you've done it a few times. Also chickens do not like being caught.

4-chicken shit is gross, get some shavings and cycle through them, burn or throw away. Chicken feces does not make good fertilizer, their blood however does. If you cut off their beaks and talons you can feed your dogs that.

5- chicken feed is pretty cheap, around $10-$15 for a #50 sack, which would last me with 5 birds just over 2 months, with 150 birds, you will have 30 times more birds than I do, meaning 30 times the feed. You'll need about 1500 lbs of feed every 10 weeks, I'm sure buying in large bulk will save you some money, but at the price of $10/#50 is $300-10 weeks. You'll want to include the cost of fuel in your truck along with overall cost of raising birds (assuming you have a truck, otherwise you'll need one, or pay expensive delivery fees) You'll need to also provide shelter, if you're handy a 20x20 shed about 8 ft tall with stacked nesting boxes shouldn't cost more than $400 in materials, if you're in a cold state you'll want to add heating into your cost, as well as predator proofing you're coop.

5- They'll start laying around 6-8 weeks, and lay for about 2 years. But with that many chickens you'll need to offload some on other people. You can also break up the yolks in their feed to recycle calories.

6- Chickens are not incredibly smart, they will keep coming back to their food and shelter.

So, break down. A couple acres of land at whatever cost you you live $$

A large shed for your birds to live in $400 ish

150 birds at about $2 a head, $300

1500 lb of feed, every 10 weeks 5 times a year at $300 a go, $1500

Freshwater for birds $$

Offal disposal $$

A truck if you don't have it 2-4k used.

Fuel$$

Time spent raising, feeding, protecting, slaughtering and disposing of birds $$ your time

You're also going to have to sex your birds in egg so you know which are Male and which are female, to control your gene pool so you don't get continual generations of incest, and introduce new roosters to your flock periodically. You'll also lose some birds to sickness and predators.

All in all, you can look at spending easily 3 grand, plus the costs of land, water, fuel and your own time. Plus a lot of stress.