Well, it sounds like you're on the right track
[You must be logged in to view images. Log in or Register.] I'll await further updates.
Also, creating an entirely new map is
definitely going above and beyond the challenge requirements. At the very least I'll let you exceed the "3 loc maps" only rule as a result (so if you pull this off you'll hit the challenge cap of 2k Blue plat) ... and if you do manage to pull off actually adding loc-mappable Freeport maps to the wiki, there may even be a
slight bonus to boot.