I think you just need a recording app, a DAW...and you should be set.
Install the DAW on the Mac, add Superior Drummer to that, and then use the Roland kit to trigger SD and/or create your MIDI grooves.
You'll also need the connectivity from the Roland to the DAW/Mac...some kind of MIDI/audio converter box. Many options, depends on the number of audio channels, and other features.
I don't use a Mac, so I can't make any specific suggestions.