If you are going to stage a Custer Week in Michigan, you have the choice of going deep with Custer material, deep with related Michigan history, or you can just skim the tippy-top of tangentially related topics.
Skimming might involve having Lincoln read the Gettysburg address and sending loads of re-enactors out into the crowd: Grant, Custer, Sherman, Sheridan, Reynolds, Sturgis, Farragut, Lee, Longstreet, Gordon, Armistead, Pickett, Marshall, and Alexander.
Looks like a fine festival for 10-year-olds.
p.s. An organizer takes exception to this post here.