I need to either move or remove this sabel palm.

It is in the way of a new 4" sewer line to be laid between the wood fence and the concrete sidewalk.

The palm from ground to the tip of the highest frond/leaf is about 8' The trunk itself is rather short less than 18" from the ground. I just trimmed it back severely to prepare for digging it out.

How wide and deep do you estimate the root ball be? As a reference the fence is about 30" from the sidewalk. Should I go the full 30" all around? Or smaller? How deep do I need to go?

Once I have it out, should I put it in a big pot and water it daily for a while, or should I put it in the ground immediately?