Interesting project.
Here's something simple that might work, as an easy tumbler:
Load up the samples by dragging/dropping them into a Session Drummer 3 Instance.
Turn on the Track Arpeggiator and set it's octave range to 1, since SD3 only support 12 instruments.
Then Select Random Pattern. That's it! If you need even more randomness, you could automate the Arpeggiator parameters via automation, and then use the Random pattern tool to draw that automation. You can set the other params for the Arpegiator as needed.
You're going to have to record the track's audio in real time if you want to keep some of the sequences, or maybe something like a Midi-loopback saving the Midi.