Hi - I am not sure I understand much more than your wanting to set up multiple outputs for your drum synth.
I happen to use Battery 3, and in Battery 3 I can assign each cell (kit piece) to its own stereo audio outputs, up to 32 of them. Once I reconfigure a kit for that, I save it as a custom kit.
I then set up a track folder in Sonar, called Drums, and in that folder I insert a single midi track to hold any recorded drum events, and then I insert audio tracks for each of the kit pieces for the particular drum kit I used in Battery 3.
I assign each of these audio tracks to the appropriate kit piece, and name them appropriately.
Then, I insert whatever bus configuration I want for that particular drum kit, such as a bus for Toms, Cymbals, Snare, Kick, whatever, and one main Drums bus that each of those buses get routed to.
Then, I set the output for each drum kit piece audio track to go to the appropriate bus, each tom audio track would go to the Toms bus, each cymbal to the Cymbals bus, etc.
Once all of the above is set, and some rough setting of levels is achieved, I save it all off as a Track Template, so that if I am ever again going to use that particular kit, all of the above work will only require a couple of mouse clicks to insert all of that into a new project. Over time, I have created many custom drum kits, and it is incredibly easy to reuse them in additional projects, as I only have to insert the track template.
I hope any of the above gives your some guidance - I do not really use other drum synths, so if there are any module-specific differences, someone else may be better able to help.
Bob Bone