Thanks for putting out this info! I’ve never extracted before so this is definitely a good read.

One thing: I think you should add in separatory funnels to the list of glassware. You pour your mixture into one and once the layers separate you can easily drain the bottom one out with 100% accuracy and catch all of the top layer, even what would make up the thin “skin” layer towards the end. We use them all the time in my organic chemistry lab during synthesis and extraction and they’re a godsend!

Here’s an example of one on Amazon. It’s a bit expensive but high volume and definitely makes your life a lot easier:

https://www.amazon.com/StonyLab-Borosilicate-1000ml-Separatory-Stopcock/dp/B0781BB3NM/ref=mp_s_a_1_2_sspa?_encoding=UTF8&c=ts&dchild=1&keywords=Lab+Separatory+Funnels&qid=1611453400&s=industrial&sr=1-2-spons&ts_id=393379011&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzVlZKWjgzSUlJSjYwJmVuY3J5cHRlZElkPUEwODI1MzAwMTBSMzJXWDdXV01aRiZlbmNyeXB0ZWRBZElkPUEwNDMzMDU3MkVJMzQwTjBCSEUzWiZ3aWRnZXROYW1lPXNwX3Bob25lX3NlYXJjaF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl

You’ll probably also want a stand:

Laboratory Grade Metalware Set - Support Stand (8" x 5"), 12mm Dia. Rod (24" L), Cork Lined Burette Clamp with Boss Head and Retort Ring (2.5" Dia) https://www.amazon.com/dp/B00HUUWYIO/ref=cm_sw_r_cp_api_glc_fabc_gvndGb2KCCTB3