If - in this example - money is already taken care of, I’d do as much of it as I was able to do, with a focus on writing, editing, and special effects. If I could get a friend to direct for me on the regular (and I have a friend or two in mind) I would let them direct. For animation, I’d do everything but design and more of the complex animation as I don’t care much for my character design aesthetic and am not trained in traditional animation.
Current example: I can do lip sync and basic movements in Adobe Animate, but walk cycles are still a bit above me, as are other looped animations. I would totally pair up with a designer/animator and I could cover a lot of the more tedious stuff while they designed and built the actual scenes. I’d also be able to do storyboards/animatics, and really give the other animator what they needed.
Basically, skill level is where I’d be drawing a line in this example.