Is it far enough way that if they terraform a bit of the outskirts you’re not gonna lose it?

Maybe you are within casting range of salmon[valheim.fandom.com]?

Honestly, I would not get too involved with that base or store anything important in it.

When they make the world map generator changes for the Northern update they are going to simply say "everything from X distance from the center gets remodeled."

That was how it worked when they did Ashlands and Mistlands updates.