The Forge of God is not on the list.
Glad to see The Moon Is a Harsh Mistress, but it should be higher. There should be more Heinlein on there, some of his Boy’s Life books rather than Stranger.
Childhood’s End should be higher.
The Mars Trilogy is an enviro-whacko’s dream.
I hated the Hitchhiker’s Guide, thought is was stupid dreck.
Ender’s Game should be at 1 or 2.
Starship Trooper, Ender’s Game, and Dorsai!.
Someone else can pick the order, although given current events, I am leaning towards Troopers. google “The Battle of Athens” for historical precedent.