I do this in our rehearsal space. Trigger DM10 via a small Acer 11", through Superior Drummer and/or Addictive drums.
What works for me is the USB out-> computer. No interface needed, really, since I downloaded ASIO4ALL, and the minor extra latency an interface adds I can be without. I could connect my Roland Studio Capture of course, but not necessary. Your MBP should work.
I then grab the signal from headphones out, via a stereo/stereo y-splitter, where one path goes directly to the PA, and the other is connected to a small Rolls mixer I have on my laptop stand where I mix in other sources (click via phone, monitor mix from the brass, vox etc.)