This edit has been completed and submitted. I did not go through with the regrade, but did replace most of the Extended Cut footage with that of the first two cuts (First Cut & Theatrical Cut) so that the original grade is the main one used in this edit - besides in the 29 minutes of footage exclusive to the Extended Cut. 10 minutes of footage along with a bunch of voiceovers & occasional sound effects from the First Cut and Theatrical Cut footage have been added, bringing the runtime to just over 3 hrs. This additional footage comes in the form of extended shots, additional shots, and additional scenes that were left out of the Extended Cut. The audio mixing was a nightmare, due to the fact that the soundtracks and effects varied between the three cuts, and also due to the presence of additional frames that prevented the proper syncing of footage - but now transitions between the three cuts should largely be unnoticeable.
If you've requested an edit from me before, the link for this one will be on the same document. Otherwise, send me a message. All the best.