You can buy totes for way under $100 and a float setup for less then $50. Then stainless steel hose & fittings and have a similar setup for less than $200. 275 gallons is going to give you 27.5 gallons per week till you return. That is about 5-8 deer per day watering, not including birds, turkey, coons and other critters along with evaporation.
If you go this route make sure whats in them also Sir..flush them well..
Be a very wise move on your feeding program