the rule i try to go with (and my grow area is 62-67 degrees on the cool side my indica plants love it)
wait till i think it's ready then wait 2 weeks
and get something you can see the trichomes
depends on what you are after
i like an up lifting head buzz so i go for white trichomes with a few amber ones...like these....
some folks like\need that narcotics effect with more amber trichomes....more mature
keep in mind your harvest will continue to mature as it dries\cures at least for that first week
all in all wait....i think they will still plump up over the next 2 weeks