Suspended Cymbal in writing for front ensemble.

I'm trying to write a front ensemble lot tune and am having trouble trying to integrate suspended cymbals into the mallet and aux parts. I know I can just manually instrument change each time an instrument switches (say from marimba to cymbal), problem is MS Basic doesn't have a good suspended cymbal soundfont (closest sound is probably the crash cymbals sound), and it makes playback pretty annoying to listen to, especially with rolls.

I do have the Muse Sounds percussion pack that has the suspended cymbal sound I like, and I set all my staves in the mixer to Muse Sounds. When I try to use Instrument Change there though it just seems to go back to the MS Basic sounds anyway and not the Muse Sounds ones.

I feel like I've kinda hit a roadblock here. Is there a way to just instrument switch from one instrument (i.e. Marimba) to the Muse Sounds suspended cymbal, or just another instrument in the pack in general? Could there also be a way to just add Suspended Cymbal as an instrument to a part? (Without creating a separate staff ideally, for visual purposes)

Any feedback or help is greatly appreciated! Thanks :)