If you are trying to do this in a commercial setting, a consultant is absolutely worth it.
You are in luck as people on this forum have shared loads of step by step guides, tips and tricks. There is a veritable wealth of knowlege here if you are able to devote some time to searching and reading.
For medium/small scale extraction and distillation, the “bucket tech” is what we used to use:
And then “hot condenser tech” for the distillation part":
That might not be the original thread but it’s full of info.
Edit: Lots of good info here:
I would absolutely take up @TheVanillaGorilla on this offer! From reading his posts it’s clear he knows this process well.
It’s nice to have someone from europe on the forum asking how to make disty the old fashioned way rather then asking how to put synthetic cannabinoids in CBG kief or make trash THC from CBD in an air fryer