Why are you doing all of that BS when you could simply do a fecal matter transplant? That will solve your constipation overnight, often permanently.
For your upper bowels you can also consider ingesting home made gelatin capsules of feces if you think you lack flora in that area and want to repopulate your upper bowels. Alternatively, 15 grams of MSM a day and the irritation and SIBO will go away. The MSM restores the PH of your gut to neutral, killing the pathogens who prefer an acidic environment.