The 1700 gallon storage tank cannot be pressurized. There is an additional pump in the storage tank that pressurizes the water in to the bladder tank loop. With the well pump working from a pressure switch, there should be a float valve or a float switch operating an electric valve to fill the storage tank. If the storage tank is overflowing, then the float valve or float switch is not working or not set at the proper level.
There are several ways to set up the control scenario for a system like this. I would probably set the pressure switch on the well pump to operate at a higher pressure than the booster pump. Ie; well pump at 40/60 and the booster pump at 30/50. I would also have the electric tank fill valve tied into the pressure switch for the booster pump. When the well pump cannot satisfy the demand by itself, the booster pump comes on at 30 PSI. I would tie the booster pump in with the float switch for the electric valve, so the storage tank stops filling while the booster pump is running. This will give you the combined total volume of the well pump plus the booster pump for peak demands.
When the peak demand is satisfied, the well pump will be able to increase the pressure to 50 PSI, which shuts off the booster pump and opens the electric valve to refill the storage tank. When the storage tank is full the float switch closes the electric valve. Then when there is no more demand, the well pump increases the pressure to 60, and the well pump is also shut off.