For a no-lapping solution:
DMT D8EE (W4EE costs less, but takes a bit more practice to work as well) and 0.5 chrome oxide.

If it turns out that you don't like paste, or simply want a finer hone before using the paste:
Add a fine barber hone (or any hone from about 12k to 16k) and a way to lap it (DMT D8C or wet/dry paper).

All you need for a factory razor. If you start getting vintage, or other razors, with rougher-than-factory edges: add a DMT 1200 in the size you prefer.