I’m all for a good ventilation system. Dust in the joints is the worst thing you can do to a seam, so I’d go for a high‑efficiency filter and a fan that pulls air through it. Keep the airflow low enough to avoid blowing dust into the boards, but high enough to keep it moving. And don’t forget to clean the filter regularly—once a week is a good rule. If you can set it up so the air comes in from the floor and out the ceiling, the dust will stay away from the joints. That’s the only way to keep the grain happy.

Sounds good, just keep the fan speed steady and make sure the ducts don’t wiggle. A snug seal and a clean filter will keep the dust from finding its way into the joints. Safety first, dust second, that’s the rule.