Nice build. Easy to stash vs my too tall to fit through the doorway column. HD I consider the definitive reference on most things ethanol, and their goal is to prevent Darwin Award winners, but they do get a little *insert name of favourite fanatical zealot organization* about many things. Then again, I just saw a company use the clear plastic hose we all use for siphoning to connect the top of the column to the product condenser, breaking the cardinal "no plastic" rule.
I am big on automation, you will find Edwin's ABV temp tables very handy to run simulations from.
Have fun!