Be very careful with adding nitrogen they are very touchy, personally people say there a huge yielding plant but I ended up with 3L or bigger sized pop bottle buds but they weren't tight, almost twigy like a sativa that's been grown in a hot environment.
I did however get one pheno from the 4 that was perfect, I will try find photo and show you, I pulled at 9 weeks but you could push this strain 12+ weeks easy.
Ok cool, will be weary of the the nitrogen going into flower, thats my usual area of over feeding with nitrogen. They sounded really good on the read. Hopefully I get the pheno you enjoyed the most.
I would grow them again for sure but maybe grow all 5 seeds to get clones from the best pheno that I would do and will chance to try again next year with them, wouldn't mind trying there Afghan though.