Hello Brianh. Judging by trichomes is safer than pistils because that is where the THC is produced. Look on the cola bud gland instead of entire plant because you are going to smoke that! 4-10 amber for each bud is very low. You can control the high you want to get based on the amount of cloudy/amber. More cloudy = more energetic/less relaxed , More amber = more sleepy/more medicated. Sometime when its hard, go around the bud and take a set of 10 trichomes ( easier to count ). If 2 is amber out of 10, its 20% and so on, i find it the easiest way but everyone has there own way 🙏 ! 😊