Breeding weight question

I'm hoping to breed this season for my first time ever. I have a female palmetto and a male classic 100% het palmetto. My female is 3 years old and currently at 323 grams. Is that a good weight for a first-time breeding female? I've read that the bare minimum weight for a female is 300 grams, but I was wondering if there's a more desirable weight I should be aiming for. Any advice/insight on this is greatly appreciated. Thanks in advance!