Be careful and don't get to big,, yes I said to big.... You will need at least the gallons permeate as what you membranes run per hour for washing each day and then extra for when soap and acid washer are needed. I've got a 125 Deer Run and last year the sap run was so low I didn't have enough permeate to do end of years wash,,,,acid wash and then another soap wash. True a few days you'll run for extra long.
2012 200 taps on buckets,,, Built me a 2' X 11' arch,,, hope to put most on tubing next year.
2011 100 taps on buckets, 30x 60 flat pan
2009 63 taps on buckets,,,, 30x60 flat pan