assuming with all these white pistils this buds ha...

Yeah, you seem to have some nute problems there... have you checked the PH of your runoff? You say you had an issue with lockout - did you do a flush? PH should sit between 6.0 and 6.5 with the "sweet spot" being 6.3 - if you can get it there and KEEP it there, you might be able to keep this grow going. Have you checked out the trichomes? Are they starting to turn amber? The color of the pistils isn't what you want to judge harvest time on - it's the status of the trichs! You want to see about 30% amber. I'd personally do a bit of defoliation, get rid of the yellowing/drying fan leaves, make SURE the PH is within range and keep an eye on the trichs... Good luck!