I am going to commit Nitro Express sacrilege however and say I would want all three with QD mounted scopes. Very useful for shooting eg buffalo out of a herd, or longer range shots.
As for the future .470, with a .404, you will want a .500 NE at the least.
-------------------- John aka NitroX
...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"