Sativa growers

This is my first grow, I got cali kush it is high in sativa so ive heard and I just want any advice I can get , I have some pictures attached , this is 4 weeks in and I dont know how much longer to go , does anyone know the avg time , Im using 400 watts HPS and im giving them flowering formula plus a lil miracle grow and epsom salts twice weekly. How do they look?

Lookin bomb as hell man, i'd suggest more lighting to really get those buds fat, but you're gonna have a real nice thanksgiving cornucopia harvest (no clue what i just said hahahahah)

Thanksgiving what ? haha they wont be done till january i think, but i dunno , more lights for 6 plants really , I cant really afford them , I got this 75 HPS and 2 3 foot fluros in there as well ,think thats enough , I also have a MV light I bought by accident but i hear they dont do much