When the triches look more like plastic than glass with consistently seen amber in any 1 locale inspected, but not a high percentage -- that's usually my preferred harvest time. I do earlier window harvest as i don't like couch-lock / sleepy buds. Genetics will have a say in that too.
There needs to be more magnification of the trchomes to assess them than your pictures provide. Under a grow light they will also light up quite a bit more in a photo than to your eye in RL while you look through a scope that helps block excess light.
You look like your nearly at early window of harvest on some.. so, depends a lot on personal preference as to within a few days or 1-2 weeks from now etc...
i'd just let them finish individually, but... plenty of reasons to deviate from that too. If you cannot have an alternative drying spot in the mean time... i'd look at it like a assess trichomes... the average of the total that gives me the most of what i prefer. So, that could mean taking the slow one early before the bulk ambers up for me... but, i'd just hang a plant somehwere else in meantime and harvest as they are individually ready... got an old tent frame? while a top might be helpful to reduce any dust, enclosed in a tent is not the best way to dry... make sure there is plenty of air exchange and a suitable RH results or you'll be fermenting pickes in there... or it'll smell like you are.