so what if it was a 3 piece set? i've seen many professional drummers use a 3 piece set and sound really good. size of the drumset means diddly shit.
a 3 piece band would have more bearing on how the band sounds as a whole more than the size of a drumset.
also tell Buddy Rich, one of the greatest jazz drummers of all time, he's not a musician because he doesn't read music.
being able to read music has it's gains, but it's not mandatory
maybe get your drummer friend in here, he might know a little more about drumming that your stupid *** does