I agree. if you put them in flowering they are going to stretch like crazy. just wait about a week or two until u are able to make mother plants out of them.. once they get big enough take 3-4 clones from each ( or however many u want) place one of each into flowering right away. and leave the others in veg with the mothers so they can grow while ur waiting to find the sex. in about 1-2 weeks when u can determine the sex if you have males throw it the mother and the othr three clones away. if its females throw the one in flower away becase it did its job and will be wayy to smll to produce a good amount of bud. by that time ur clones that you took have had a good amount of time to grow in veg depending on how big they aree u can either keep growing them or put them in flower. either way u save urself 2 weeks in veg.