Key words in your post are "doesn't matter" as tha
Post# of 7795
Key points forward will be how much they find on their first and subsequent finds, how often they start finding items, locating a full manifest from all the stops along the way and what wrecks are on the horizon and what will they produce?
With a full manifest, an estimate can be calculated on what the value of the wreck could be. Whatever is predicted will be wrong (too high to too low) but it will give us an idea of the potential value of the treasure.
Also Spain has been discussed several times but some are hard-headed. Let me make this as easy as possible. Assuming it is not a war ship (1715 fleet were not warships):
OMEX = Deep International water treasure = Spain gets treasure (most likely)
SFRX = Shallow federal/state waters = Spain does not get treasure