How much should KSB's weigh?

I have 1.2 KSB, my male is about 170g, my adult female is 360g, and sub-adult female is 180g. Is that a good weight for them? What is a good weight for breeding? I've read at least 300g is recommended, but I'm hoping to get my female to at least 400g to be safe. What is a good rate of gain for an adult female? How much should I feed to help her gain weight? If I feed her 10% of her body weight in mice per week, can I expect at least a 5% gain? I read that males rarely get larger than 100g, but my male was sexed, so do I just have a very large male?