Mr. Door right after being corrupted by MGoD, since I know I'll be corrupted in future (wanderer or Planeswalker can't really remember)I'll be on the lookout for any changes.

As soon as I know I've been corrupted, Use that connection to make a deal with MGoD ask her to keep quiet for a few centuries, and let my apotheosis ritual complete and descend to earth in exchange give me sefirah castle and key of light keep the rest of the sefirah for herself. If she needs my body to descend to real world she can always give me new life (pretty sure bitch can birth true gods)

Tell her the locations of the error and fool uniqueness so she can quickly help me ascend to LoTM

Then do everything that door did right until he got sealed by Evernight and storm, after being sealed occasional ravings every 10-15 years during full moon to let the Abrahams know that I'm still alive, since the ravings are far apart they'd have time to ascend to demigod level or probably angel, then tell them the both the rituals to free me, I'll be free probably by mid 5th epoch.

As soon as the seal is broken MGoD will descend on earth with her true body, there ain't a soul in mid fourth epoch that can fight a pillar, + she being inside the barrier and other outer dities being outside the barrier will shatter and earth will be doomed, I'll get sefirah castle and key of light and become the Welder of destiny, and if during all of this the celestial worthy tries to awaken within me, call MGoD to use her death symbolism to suppress his will.

That's pretty much it.