In two years you should be able to get her up to size, with size being more important than age. Many people will breed a female when she is just over a year old if they can get her up to 1200 grams or more, but what I've seen with this is that they will have a small clutch and then may not produce at all the following year. I won't breed a female that is below 1500 grams, but I'd like them to be as big as possible. If they are 1500 grams when they lay they will be far less afterwards, as a clutch can weigh quite a bit. Post pictures when you get your girl.