I don't see a need for an elaborate drying system. For over thirty years I have been drying B&W film (35mm, 120 and 4x5 plus 8x10 dup film) in my darkroom having attached a heavy fishing line over the sink and hanging the film with weighted film clips or in the case of 4x5 in film hangers. I have a filter over the ac vent. The film is hung with the emulsion side away from the ac vent which is on the opposite wall. The film dries quickly and I have never had a problem with dust.