Ok so I see the "recommended/ sugested" weight for breeding a BP to be 1500. I have seen weights ranging between 1000 grams and a starting weight and up to 2000 grame. If she is going to breed then she will if not then no harm done. I have my own standards but you are not asking for someone else to give you their standards. I know plenty of breeders who breed at 1000 grams and do perfectly fine. Just to make sure I am clear btw I am talking about the female weight not male weight.