Wait until around 3 months after the last amalgam is removed before starting chelation. Cilantro has an unpredictable effect and imo if it is to be used at all, it should be used after a year of chelation. Chlorella is okay, however many people are sensitive to it. If get a reaction to it stop using it immediately.
I am doing chelation with just ALA. DMSA might speed up the chelation process , and might decrease the severity of the side effects of chelation if it is used with ALA.