with 6 kids you'd have to do 3 basses, 2 snares and 1 quad. Is it possible to bump an interested flute over to bassdrum to march 4? In my experiences many decent bass drummers come from a woodwind back ground, they'd probbably be good on a drum 2 (for most m.b.'s of that sizes writing difficulty) due to their good timing/rhythm, drum one should be a young player whose chops you want to build up for snare, bottom bass a larger kid, even if they are good, and if they say they think its the easy part, bulk their notes up for them, in closing I'd never stack basses, and btw, Blast and Corps "all-stars" are indeed both "all stars", so unless your kids are chop monster "all-stars" no way.