Get a used 275 gallon IBC tote in a trailer if you can. Probably $75 on craigslist as every area usually has these they are getting rid. Find out what was in them before or clean carefully, some had dye, solvents, petroleum products etc, some are clean and rated as 'food grade' As long as they are clean you should be good. They are stable on a trailer and have a nice large discharge fitting on the bottom with valve. You can put 50 gallons on each tree much faster that way.