so use vsl strings load the violin ensemble and the viola ensemble make the respond to the same midi channel set the patch for each to sforzando and use varying amounts of velocity to make the sound gnarly.
Maybe also load the cello ensemble patch and use all three to create a massive sound - use the output for each sound to balance the overall levels
choose whether to play the cello at the same octave or the octave below
on the horns
load vsl french horn ensemble and trombone ensemble select patch as sforzando
add tuba and trumpet ensemble to provide depth or bite tuba at the octave below and the trumpet in its lowest octave only, set balance with each ensembles output level