seed breed

okay so i have 6girls all about 1-2months veged and just planted some seedling hoping i get a male. would 1 male in the room with the girls be enough for effective seed production.
i will put the seeds in 12/12 to sex faster and keep them in the room until harvest.
new to breeding normaly i just spray my girls with collodial silver but i got some good seeds from a friend and wanted to breed naturally.
looking forward to insight . thankyou for reading

1 male is more then enough.

One full blown male will load up a 6 pack of your little girls with all sorts of male badness. Get the guy in a different zip code and harvest some pollen, unless for some reason you want 80,000 unproven seeds.

can i just leave in flower the whole time ? not going for any bud production just seeds

It won't hurt it to be left in if all you want is to seed a crop.