So is your setup in your house? I understand there’s quite a bit of smoke and it can really smell your house out if you do it indoors.
Do you let the coffee degas a bit before you brew with it? What’s your preferred brew method?
You said you do 4x 250g batches per session. I assume that’s 250g of raw green beans going into the roaster… what’s the yield per batch coming out at the end?