wow they are some skinny plants my friend very large internode spacing too which is not ideal im not gunn ablow smoke up your arse and tell you these look amazing cause they dont but for a first time its a real good attempt and way better than my first grow. I would never advise autos for a first timer they are so hard to feed and predict. photos have a much better tolerance for first time growers anyway its your light which is most likely causeing the issues its either not bright enough or its being hung at the wrong height that can only explain the 4 or 5 inchs between internodes the plants are very healthy though so thats good. they could of used bigger pots in my opinion its better to go large and not need the root space than go small and choke your plant up with root bound issuse limiting her space. purple punch is a brand new strain not something i would recomend for begginers i always say do a well know strain first like white widow or ak47 something along this nature these plants have proven some of the easiest to cultivate period. I wish you the best of luck finishing them up but dont expect a very large yield being completely honest with you bro.