New here, these are my snakes :-)

[rabernet]

These pictures were taken a while ago. At the moment the female is 1100 grams and the lesser is at about 510. Do you think the female will be able to gain enough weight by next breeding season for it to be safe to breed her? (at least 400 grams I'm hoping).

She should! Many breeders start offering their females more food in August to build up reserves for breeding. If she'll take 2 prey items once a week, try that, or try feeding her every 5 days instead of every 7 if she'll take it.