Joshua Blair has started a blog detailing his adventures in planning what he calls a "Civil War Power Tour". He must know that Tim Reese should be his Maryland Campaign guide and that Manny is standing for Antietam specifically. James A. Morgan III does a great job with Ball's Bluff and should be reachable through his publisher Eric. Not sure whom to recommend for Gettysburg or Fredericksburg or the later stuff.
Joshua could keep it simple by booking James McPherson for seven days. Cost per person: $2,165.
Why not book him, then argue the whole time?
That would be a good vacation, except you'd still have to pay him.