You would have a major problem with finding a breeder willing to let you use their registered stud number one.
You will most likely end up with having to use an unregistered stud from one of the free-ad sites, and you will have absolutely no knowledge of the lines or health issues in those lines whatsoever.
The breeder you bought your Bengal from sold her as a pet for a reason. Do you know if there are any health problems with your girl's line? Are you absolutely certain that she is a good example of the breed? Do you know anything about genetics, even a basic knowledge? Has your girl had any health testing?
Have you heard of HCM, PKdef, PKD, LP, HD, FCK, PRA, FIP for example?
You are playing a very risky game with wanting to let your girl have the 'one litter'. You are putting her health and her potential kittens' health at risk. The Bengal breed has MANY health problems, and genuine breeders are trying to work carefully and selectively to avoid these problems and to ensure the health of future generations.
Do your girl a favour, and spay her. You could end up with a female cat spraying relentlessly and with behaviour problems too. You may have kittens with genetic faults. Breeding Bengals isn't for the faint hearted and it should be undertaken with thorough research & experience of owning a Bengal before you even consider producing kittens.
Read through this, digest it carefully, and then rethink mating your girl:
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