Components will favor a 223 the most 22-250 second, and 204 last. Finding loaded ammo the ranking will be the same.

As to which one you should get, a good argument could be made with regard to all three. Most economical 223, most versatile and will achieve your 4K fps with a wider variety of bullets would be the 22-250 and the 204 Ruger kind of fills the gaps the others don't.

Unless you plan to have one built in the market we're currently in I'd say get whichever one you can get first as well as ammo/components to feed it with.