Max7219 and Common Anode Displays, choosing the correct transistors
You did select a proper MOSFET and NPN transistor for your application. You selected a MOSFET that could handle maximum current through each seven segment display ( with good headroom) and voltage rating. You selected a proper NPN transistor which can handle current of each LED and with proper voltage ratings.  These transistors can work at 5V. The circuit also looks good.