It sounds practical to fill your dehydrator but more food may slow down the process overall. I think there is a point of dimishing returns here.

You may want to set your dehydrator on a back porch or at least a closed-off room that you can vent to the outside if you are dehydrating onions and peppers. I buy the club-sized dehydrated onions, so you are braver than I... And, I dry tuna, salmon, and shrimp when the guys are likely to be out for many hours. Stinky!

CamperMom