3) Stated input voltage from the driving logic circuit (said to be 5V), is probably overly optimistic. As an example, an old fashioned TTL circuits (like 7400), can’t drive output higher then 3.5V ...

However, for a practical circuit, it’s more common to simply use a MOSFET driver IC for it. Such an IC provides: High side and low side Fet driver (with peak currents upto 3A for fast switching).

FET Preamp Circuit diagram and schematic. The circuit is a sensitive preamplifier using an N-Channel FET and a PNP transistor. This combination gives high input impedance and low output impedance with ...