Unless you're filling up an auditorium with sound, no problem. Your Mozarts are the same as my Bachs - 4 Ohms with a sensitivity of 90 dbw. The PM8004 is a high current amp putting out a true 100 wpc into 4 Ohms. My PM15S2 puts out 140 wpc into 4 Ohms. The difference between 100 and 140 is negligible.
It will make your Mozarts sing with no problem.
It will make your Mozarts sing with no problem.