i dont see why it shouldnt work you can flower a plant at any age altthough unless its in its genetics to mature quickly growers would generally reccomend waiting until you have 4-5 nodes at least before you flower
if you want the plants to stay smaller but still bud a lot you can veg for say 5 days from seeds then lower the light levels gradually say an hour every day the plants wont stretch as much.
if you put on 12/12 straight away the plant would grow an flower but would probably take 2-3 weeks to show sex this is where the plants stretch mainly for 2 reasons, to find light and to reach maturity/ height to flower
clones can be put on 12/12 as soon as roots develope.
i dont see why it wouldnt work but you may have an extended flower period by a week or so
personally id only try this method with feminised seeds as you may end up with a higher chance of hermies or jus males