@notrichenough Good thoughts that should be workable. I’m working with a postal scale and converting ounces to grams, but it should end up close enough.
@ucbalumnus I’m not under the impression there’s a specific harmful amount on any given day, just daily consumption over a longer period of time. Personally I don’t have to worry about any amount with sushi. I like my sushi broiled and usually with tartar sauce… 
Raw fish isn’t my thing.