White Widow is known for packing on resin during Weeks 9 and 10.
I have 1 plant that is at Week 11 with a medium amount of fresh pistillate growth. And, packing on the resin.
Early resin is good, but it's only the beginning.
Also, it depends a lot on whether it's an indoor or outdoor grow.
With an outdoor grow - one cycle per year - there is not much incentive to harvest early. It won't speed up the grow cycle, it's still going to be another year till the end of the next flowering cycle.
Indoors, with flowering cycles as short as 7 weeks, it's way more important to have early resin.