So I am in the design stage of thinking of building a dogwash addition to my carwash. I am a little crammed on space so I would be limited to a room 8' wide. I was thinking of a room 12' long but I could go a little longer if need be. I am thinking of starting with 1 tub but leaving room in the future for a shower type stall or another tub. I would never have more than 2 tubs. Do you think this is enough room? What kind of heat/ventilation are you guys using. I have been in a couple washes that stink to high heaven. Is this something that can be overcome or do you just live with it?