If you load the EZDrummer VST then after it put the Sforzando VST with a RealDrums SFZ turn the volume down on EZDrummer and set it to Midi Out. Because Biab won't let you chain a VSTi after a VSTi you need to use
Element VST
element-win64
element-osx

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This is the hook up guide, make sure you have the EXT sync enabled in top left, if you right click the VST and Save Group it will all load each time without having to set it all up again. You can do the same with EZKeys EZBass, even use them for Playable RealTracks sections:

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