Hey folks, will get to some responses soon but I’ve edited the main body to reflect something that was missing, which is to say:
Unique means killing the same boss during that same week won’t give credit - killing the Tarragrue on Normal and Heroic in the same week will only give 1 kill. This means the soonest a player could get all 3 Dinars is week 6 at the earliest, not weeks 1-3 as some have speculated. Sorry for the confusion!