I'm glad they aren't as expensive as they look. I still think 650 in each is much too many though, especially if you're trying to combat disease.
I still suggest you try things on a smaller scale first if you've never raised meat chickens though. There are factors to consider you may not think of until you really dive in. They only take 6-10 weeks from hatch to slaughter if they are Cornish X, so after that you could have a better idea of how you want to do things and then get a new, larger batch of chicks. That's just my suggestion.
I agree.
if you don't own land it is much better to make vertical cages. when they are small chicks they need heating lamp even in summer. you will keep them for 45 days only. every day after 45 they eat more than they gain weight so that would be a loss. mobile tractors are good for foraging but I guess you don't have a lot of green grass so it is not convenient for you.
can you get sawdust? that can be very helpful in raising broilers.