If you don't have one, get a $30 subscription to Alldatadiy.com. I am looking at the removal procedure right now. In addition to the oil pan replacement, there are callouts for windage tray and gasket assembly replacement and a specific bolt extraction sequence on the tray itself. It looks involved but by no means impossible. Also, you will be raising the engine off the engine mounts and removing crossmember. 4x4 has an additional step over the 4x2. That website has the procedure pretty well documented.
Can you not get that hole spot-welded? Would that not solve the problem pretty quick for ya?