Are they ready for harvest?

[Wulves]

I've been pretty sick and things happened to my plants I just basically crawled to them everyday.
It's week 6.
Afgan Auto and Northern Lights Auto.
No bud rot I checked.
But there is something going on I just can't figure.
I think I should Harvest the troubled ones at least .
I would love your opinions.
Thank you.
BTW the last photo is of an Unknown strain a seed I found in a bag of Potting Soil.
It's amazing.

 

[Carcass]

In the first 4 pics,those look close to ready-the leaves yellowing and dying off are a normal thing
toward the end of flowering-
Do you have a loupe to check for amber trichomes? If so,and you see about 15-20% amber trichomes,then they're ready-or,for a little more energetic buzz,you can harvest when all the trichs are translucent,or cloudy looking.
The plant in that last pic has a long ways to go,but you probably know that
The 5th pic ,that one is close ,but probably has a couple weeks to go.
Checking the trichomes is the only way to know for sure,though.

 

[Wulves]

Thank you very much.