I also tried my hand at multiple bleed procs builds, hence the advice 
Blade spirit has 2 different attacks, so if you have 4 out, you have 8 concurrent bleed DoT that can stack on the same target. Grasping vine is great, but if you focus on bleed, stacking them doesn’t work as well… it’s still amazing to proc devotions and gear procs, however.
Speaking of which, the best belt if “moar procs!” is your jam is probably Lacerator girdle.