Of course, I am not in that program, and I don't know any thing about the detail mission profile. I know that NASA was suggested to do 4-body problem for lunar transfer orbit for performance penalties analysis.

For LEO sats, there is no need to consider other planets, in fact not even moon. But for interplanetary travel, n-body problem should be taken into account. The interplanetary superhighway, (interplanetary Transport Network) is based on chaotic theory and restricted 3-body problem.