Popkins wrote:I'm guessing id want to seal all external posts so no one can grief me as well in that 8hour period
Would be good to do so just to be safe, and I don't think it's as necessary any more but it's a good habit to extend your claim at least 1 tile further than where the largest gate cornerpost can be extended. Although even when the claim is out of presence it may still be impossible for anyone to build on it anyways, which is the case for an active claim I'm just not certain that is also true for inactive. Keep in mind you may want to extend those cornerposts yourself in the future if you want to expand in some way, but it is of course also possible to use a sealed cornerpost for a gate so long as the other unsealed post is at the correct position for it meaning you could simply build a new one later on if required.
Either way, do what you think is best to ensure your safety!