i think you can harvest 2 times in 4-5 month from seed, if the seeds are feminized its even easier.
week 1, 2 ,3, 4 germinate seeds + veg
week 5 - take clones
week 6 - vegging seeds , creating clones
week 7 - last week for vegging seeds , creating clones
week 8,9,10,11 - seeds to flower ,vegging clones
week 12 - seeds to flower ,vegging clones
week 13,14,15 - seeds to flower clones to flower
week 16 - harvest, ,clones to flower
week 17,18,19,20 - clones to flower
that do you think ?