First time outdoor auto grow, north uk

So week two i started feeding the plants low amounts of blackstrap mollases mixed in with their water, i think the first feed i went a little overboard with the molasses so there’s a couple brown spots on one of the plants, but nothing that looks too concerning. After dropping the amounts, they’ve all seem to have shot up a fair bit. They’ve been inside this week under a CFL bulb due to poor outdoor weather, but now the suns back they’re back outside! Never grown autos before so i’m not too sure what the growth rate is like, are these looking like a decent size for 14 days? thanks! also the purple punch struggled to break soil and didn’t seem to be surviving well, so i decided to get rid so i can focus more on the other 3.