Ok, I'm sold on creating a template. Does the following sound about right?
No reason to group by bus in SD2 because Sonar won't know anything about those buses. From the SD2 side of things there not much to do other than set levels, bleed, maybe some FX.
From sonar, create a drum folder to contain all the SD2 tracks / there will be a 1 to 1 mapping between Sonar and SD2.
In Sonar create my various buses. Kick bus, Snare bus and any others I may choose to have.
Save as a template.
Create a new project in Sonar and choose my template.
When it opens I will have a SD2 synth, all it's tracks and buses I created and any FX I've applied...
Is all that correct? Any suggestions to that?
edit to add
When mixing drums, is it standard to only have the kick, overheads and room in stereo?