Well in my little circle (don't see why that is funny) we don't like to repeat breeding as with any dog, terrier lurcher etc when you repeat the same cross it never as good as the first litter of that cross. FACT. Any dog breeder/ trainer will tell you that. As for my bitch she is 2 years old. And you say you have a 8 month old bitch and she hasn't even cross your mind. I'd be pretty excited if she was my bitch especially as the season is around the corner, even if she doesnt dig yet she should be taken out and shown what is about, see what happens at the end of a dig let her see for herself,