You wouldn't set the pump on the bottom of a 400' deep well. And pressure isn't how you size a pump, if that's the reason for the question. The pressure desired at the highest fixture is part of the equation though.
I would use that pump if it fits the peak demand gpm and pressure the building requires. In reality, the head starts at the water level in the well to the highest fixture plus pressure loss in the pipe/fittings.
This may help;
http://www.irrigationtutorials.com/pump.htm
Are we talking a rock bore or fully cased and screened well? I ask because you'd set the pump at different depths depending on the type of well. In a rock bore, if you want to plan ahead for drought and lower static water levels, you'd size it for setting it at 385-390' (capable of pumping water from just above that depth).
If you have a 6" well, you have 1.47 gal/foot of water above the pump's inlet; so 385-15=370 * 1.47=544 gallons of water PLUS the recovery rate gpm of the well. Screened wells usually have the pump set in relation to the highest producing section of screening.
Or you can set the pump in either type well at 15-20' above the pumping level of the well. Pumping level being where the water level remains constant and 10-20' above he pump.
If you use PE pipe in a roll, you will have the least pressure loss of all choices of drop pipe, and only two fittings from the pump to the top of the well and another two to three to the pressure tank.