Newbie looking for help on purchasing a used machine for snow plowing. I would like to spend $6k tops.

This will be used primarily for plowing a driveway in Colorado at an elevation of 9300 ft. In summer some occasional light off road and trips on dirt roads to the mail box.
I have looked around the site some and I’m partial to the Rubicon because of the drive system. I would also like it to have EFI due to the elevation.

Thoughts please.