Dont get too happy with breeding til you have Fishing, children and nursing moms eat as much as any other villager and they do not work.
Crops are on a seasonal cycle, it does not matter how fast you gather crops, they will not come up any faster or slower. If you only have 2 people gathering crops at the start - they will contunue to gather crops and when they are done you will have 30 mins or less til next crop. But if you put the entire village to gather crops, you may look and see you have 80-100 mins til the next crops. I find they tend to not starve if you gather the crops more slowly.
(Hint: watch when crops are being gathered, when you see that you have less than a few dozen left, watch closely, as soon as it goes to 9 crops left, throw everyone in the village at the crops to gather, you will get 7 for each person who collects crops regardless of how many are left)