Just going to throw this out there, but there is definitely a reason many breeders encourage giving their plants a 50+ day veg period. If you think that you are going to experience a plant's full potential growing 12/12 from seed you are mistaken, plants do not perform to their maximum capabilities unless they are allowed to veg until they are at least showing preflowers, and many breeders would encourage you to keep them in veg longer than that. You might get them to finish faster than that, but unless you are growing some serious 6+ week transition tropical sativas, you are just going to end up getting inferior plants this way. You won't achieve that kind of potential until subsequent clone runs. You'll get a good idea of the capabilities of a plant, but as far as things like true terpene profile and potential potency, you just won't see it like you will if you induce flowering in mature female plants.