As long as your sure of the sex & your clones were taken from a sexually mature plant you can go straight to flower after the clones develop a root system,no veg time needed.Instead of growing 2 or 3 plants you can grow 8 or 10 plants in the same area with better light coverage,then use the SOG method to cultivate only the top colas.
The sog is a much better use of limited lighting & since you'll only be growing the main cola's you can fit more plants under the light,giving you a yeild just as large if not larger,of all top flight buds,no popcorn buds to toy with.
Read this entire thread,look at the pictures,look at the yeilds compared to standard methods,you'll realize just as i did that there is no better way to grow than the sog.
Dont be in a hurry,it took me 3 weeks to read the whole thing & be able to digest all the info in it,just about every question you'll ever have is answered in that thread if you start from post #1 & dont skip reading anything,his metthods can just as easily be applied to soil grows as they are with hydro.
https://www.rollitup.org/hydroponics-aeroponics/6592-get-harvest-every-2-weeks.html