Good lord you have a friggin lab! ;)
The thing about tincture is......what's your goal? It seems like making the best tincture means the absolute most resin you can strip off an into your grain alcohol. Well, if that is the goal........so you can what? sneak as many doses across enemy lines as you can fit in as little liquid? Do you want a dose to be like, 3 drops? At some point you would just eat converted extract, or an edible. If you want a tincture, an alcohol based "squirt" that you can squirt into a hot cup of coffee or tea, that will hit you fast.......then what's the difference if it's a full squirt a half a squirt, 2/3 of a squirt......I like it in a glass of good beer too. Especially an IPA. It will float on the top, and weed and hops are similar and go together well.
So why go through all the time and effort, multiple washings, squeezings, etc, etc........if you're just gonna end up using less of the same thing. You might as well make 1 good wash, or 2, evaporate it down, and bottle it up. More important is proper converting/decarbing, the quality of the weed, the ratio of alcohol to material......unless the goal is to impress your friends with how much you can fit in such a small amount of liquid. But then it's really just a contest.