I would for another week or two. Looks like you still have 3-4 weeks to go. The buds will swell and get denser. Drying shrinks the buds considerably so if you harvest early you will get fluffy airy buds. I don't harvest by trichomes either. It usually leads to an early harvest. You can tell when a plant is ready to harvest just by looking at it.
Many beginners will harvest a plant that looks like this thinking it is ready. It will shrink during drying and be fluffy with subpar smoke.
When in reality it should look like this, which will retain it's nice dense structure after drying.
Beautiful!!! Ok man, hope this Auto will bulk up a bit more.