Hi looking at water systems....

Something like

Mitsubishi 250 watt pump
DOS Natura water tank 1000L

This is coming from an underground well and is being pumped from a luckystar deep well pump, the water has to travel 50m + from pump 1, is there anything that i need to know or problems that could occur?

because our water is coming from a well, we were advised to get a water treatment tank, could anyone advise on this, or if anyone has one? if they are any good as they are about 12,000 starting price.

could anyone draw a diagram to illustrate what goes where in the chain?

cheers much appreciated