First off its way to early to be checking trichomes at all. The plant has lots more growing to do still, its completely covered in white pistils it looks like.
Secondly AFTER the plant is finished growing and is ripening then you check the trichomes on the actual buds, and its best to judge the whole plant and not just the very top buds that are in direct lighting. Leaf trichomes mature faster and get damaged easier then the buds do which can give a false appearance of maturity.
I don't know what GG#4 you actually have, but typically its a 10 week strain if its anything like the real GG#4. If its from any sort of seed its not the real deal and could be done at any point in time. Big key is its not done at a certain time, its done when its finished growing and ripe.