I live in and grow on a mountain- not at the elevation your are suggesting- I am at 2500 feet growing elevation- watch the sun late in season such as now- amazing how different the sun light will change with the equinox- mid summer I get great light now I receive little direct light- and make a terrace to hold rain in and back from erosion - I have found terracing the ground the most beneficial thing I have done in preperation- good luck