Did you ever do the 24h urine copper to rule out Wilsons? Aside from a liver biopsy (ouch), it is the definitive test. It sucks that your ceruloplasmin doesn't come up... mine went back up as soon as I reduced zinc and started taking copper separately.
Per Dr M, optimal ferritin for thyroid and dopamine is mid-range (150 for men)... has me taking ferrous sulfate 2x day until I reach this level. I take with vitamin C to enhance absorption.