PoE2 pre-download client & then add to steam library?

Howdy all,

I've looked over the reddit and haven't found any clear instruction on pre-downloading the game with the POE client and then adding the game via steam library.

I've never used the client before, just steam, so do I begin downloading on the 5th @5pm and then add the steam file location to where it is downloaded and likely verify integrity files? I would appreciate any insight or walkthrough.

Edit - our lord and savior Gaben has opened steam pre-download. Look forward to seeing everyone on the beach!