How many consecutive nights in coach do you think you can stand with nights between trains in large endpoint cities?
Try this one: CHI->NYP or WAS (hotel), NYP/WAS->CHI (tr #51) (hotel), CHI->NOL (hotel), NOL->LAX (optional hotel), LAX->CHI (hotel) CHI->SEA or PDX (hotel), SEA/PDX->LAX (hotel)...