Here is a suggestion for capturing the drums in three tracks that might work … not sure though:
Assuming that your main send and monitor send are line level you can isolate two tracks out of the mixer. Go ¼” out of the main send into one of the ¼” stereo line inputs on the TonePort and go ¼” out of the monitor send into the other ¼” stereo line input.
Use these two for you overheads by setting the monitor gain to zero on one overhead and the channel level gain to zero on the other (so the main send is one overhead ond the monitor send is the other).
Use the XLR input with mic pre on the TonePort for the bass drum.
I think you can then set up 3 tracks in Sonar.
You may be able to 4 Track the drums using what you have if you are creative.