His Amalgam Illness book touches on lead and arsenic a little but there are good sections of his hair test book on them.
If you did not have the liver problems I'd probably encourage you to get the hair test book; however, with liver problems, AI book is a very handy resources. I highly recommend it for that and adrenal issues.
I don't know the implications of chelating with AC protocol along with taking enterosgel. However after skimming the FAQ at the mfgr's site it does not seem to be for heavy metals, rather other toxins.
I'm not being critical of it. It might be helpful. I don't know.