im fairly green as well
however i think what he meant by submixed to stereo pair is that hes talkin 3 toms with only 2 outs...alot of boards have like 4 submix channels, or 2 stereo pairs of submix chans...so i think hes talking about sending the 3 toms to the submix and yes you'll do all the panning there and stuff too but instead of 3 line outs you're only using 2...
i could very well be wrong
e