I don't drink coffee, but do Hospitality for a civic group full of rabid coffee drinkers once a month. When we have our meetings, I have one hour to get everything for 125 people ready to roll. I turned to cold press coffee to speed things up. After several false starts, we hit on the solution of using the two unused cooler/dispensers (think small Igloo) that were in our attic. We line them with paint strainer bags (designed to filter 2 gallons of paint, looks like a big hairnet, costs only a couple of bucks), dump in the freshly ground coffee and cold, filtered water and let it sit overnight. I haul the containers to the venue the next day, lift out the bag of grounds and pour the elixir into the coffee urn. I add enough water to the proper taste (volunteers, not me, lol) and turn on the pot. Since all it's doing is heating up the cold brew, it's much faster and everyone raves about the taste. You could easily scale this up or down, depending on your coffee needs.