Did you also stumble across “ethanol as decarb catalyst”?
Not saying you can’t get there.
Just that worrying about how long decarb is gonna take isn’t particularly productive until you have something to decarb…at which point, the question is “how long with the bits I have?” …then “how do I detect end point”…THEN “faster?”
…end point detection has been explored, and “faster” is about understanding what’s going on (hence refs).
There are absolutely ways to achieve thca from biomass via EtOH.
If you have “chemists” (plural), it is perhaps they who should be digging…