Long Distance

I am looking at a job that will require me to use a Tucker Pole System. The only problem is, the water source is about 400 - 500 feet from where I need to clean windows. The windows are 30 ft

Has anyone had problems using a Tucker and DI tank at 400 feet without a pump of any kind?

I have run a DI tank w/ 200ft of garden hose from the tap to the tank and 200ft of hose from the tank to the pole w/ no problems. I was doing 3 1/2to 4 story work w/ a Tucker pole that had the smaller flow screws (Tucker part #108S).