If your division of fish and game allows you to hunt 10 does then it should be safe to take that many. I know in NJ each deer management zone has different rules on amounts and types you can harvest to coincide with their deer per square mile and buck to doe ratio. If they allow it, then it is safe. I also try to manage the doe population during september as well. It's great for the herd and puts meat in the fridge. But when the october lull is over its buck killiing time.