No leave your quarry in. and it's underground too.
Anyways, 1000 is not alot
and the point is to put every structure in to determine the true center.
it might be a bit tedious, but once it's completed it'll only need updating ocasionally
Well 1000 blocks is 10x10x10 but a sphere of 1000 blocks works too.
Space is defined like this:
For an enclosed area, space is all the area inside the walls and including the walls if you built them.
For an unenclosed area, space is the standable surface area x 3
3 because 1 for the block standing on, 2 for you!