The spacial position of the players is important, and should be as follows:
To the far left of stage, preferably in front of it, tenor, alto and sop sax, going towards the stage. To the far right, Trumpets 3, 2 and 1 (Trum 3 opp. tenor sax). On stage, from mid-left to mid-right, Trombone 1, Horn, Trombone 2. Behind them, left to right, Bass trombone 2, Piccolo, Piano (middle), Bass trombone 1, Tuba.
Incidentally, bars 139-157 should demonstrate the Doppler effect, if executed well.