There are so many Colon Cleanses out there that it is hard for me to keep them straight...but if I remember correctly Herbal FiberBlend contains some pretty aggressive herbal laxatives...senna, cascara sagrada, cape aloes, turkey rhubarb?...which can cause food to pass through you before it has had a chance to digest properly. I would suggest that you use psyllium with liquid Bentonite instead of the one you're using now.
By all means include digestive enzymes...there are many formulas available that also contain HCL.
Use the probiotics after you've completed the colon cleanse...they'll implant better in a clean colon.