How long do i vegg before placing late outdoors for a pound?

Say if you vegg it with 600 watts mh or LEDs, how long would you have to vegg it Before transplanting to the ground during a weather of bloom to have it flower and bud with the sun? With seeds. I heard of poeple vegging for 6 weeks from seed and get QP a plant indoors

from seed I reckon 6 weeks should be good enough, I cant really comment more without more info

8 weeks would be great the more the better

if you can veg for as long as you can try to get the plant as big as possible and throw it in the ground and you will get lbs not qp