After some thinking, I've found that Sanctuary has been a deadweight nation I've barely used for months and I'd like to merge it into Haven's Haven (which they have allowed and I've asked them to confirm here asap) nation and claim something else.
As for what I want to claim, it is this:
https://i.imgur.com/hn3rIvc.png An island next to Gotmark, (image is at map scale and can be directly transferred), which fits into my regular pixel limit with Bashime. If necessary I can present some of my worldbuilding and/or future plans to the carto team.
Its name will be Jómfrúland, or Jomfruland idk how you guys handle accents.