Great thread, thought I would add my two cents worth
I used to have a 90 mtr bore and I used to pump into a 30,000 ltr tank which I then used to water the veggie patch. The weight of water in a full tank was always good to water using gravity. Had a pump too if water flow got too slow for me.
The $2900 option sounds too good to go any other way. You get 2 year warranty as well.
