just stumbled across this thread. great idea to be a grower, processor, and roaster. went to a coffee farm in northern Peru, and they had a setup quite similar. the processing facility, and a separate facility where they did sample roasting and cupping of different varietals. they also were a member of SCCA. you are living my dream Daniel!
as for the coffee bags, try: Stand Up Pouches, Coffee Bags, Paper Bags, Beef Jerky Bags