Once the game has been released, we will have at least one version of each game in the series on VC. We'll still be missing the "Wonder Boy" versions of two of them, however - Wonder Boy III: The Dragon's Trap and Wonder Boy III: Monster Lair, which are currently both on VC as their TurboGrafx-16 conversions, Dragon's Curse and Monster Lair (Respectively). Of course, we'll also still be missing Monster World IV, but as it was a Japan-only release and is quite text-heavy, it is debatable whether it will be an import title or not.
"What's going to be the best way to make that happen?"
Delayed, yes, but more relevant in its new guise