I think it’s a good idea to get familiar with Ot with midi tracks, simplier.
For slices, nothing better than yours, with @Abhoth Octachainer, or inside Ot with a simple one bar loop. Amen Break loop is still my favorite to test slices, after an accurate Daw time stretch processing for each beat.
I still use a simple downloaded TR808 drum kit sliced with Octachainer.