Thanks
I had about 15,000 whispered secrets accumulated, doing nothing. Compared to the 2726 souls (or nil of the alternate options) for Brass Embassy; or to the 1542 drops of honey/1 Antique mystery I have for Royal Bethlehem - it just made sense.
POSI vs. 4 tier lodgings first: Actually, I began working toward the Bazaar Lease first before I thought of seriously trying for POSI, but I followed the content and thus ended up completing POSI first.