Will have to look that one up, being just shy of 7000′ ourselves, gardening is a challenge.
Put in a greenhouse, looking at a modified hydroponic system for watering/fertilizing.
Our biggest problem has been heat and soil. Heat, or the lack of heat most of the year at night especially.
And our soil is severely lacking in nutrients. I’m worm farming to build up the soil and use the juice as fertilizer.
Good luck.