Just use the PF Mei - I really dont understand why you think the DF will help you anymore than opening your own learning parties through the PF.

There are numerous practical reasons why raid-tier content is not added to the DF within at least 6 months of release. Barring any arguments about player skill, these two are primary factors:

-Party Comp
-Gear lockouts

This game has already set the precedent of adding raid tiers to the DF only after the next raid tier is released and the echo is introduced and the gear lockout lifted.

If you dont like this setup, you may party find a group to enter before it is added to DF (a lot of development went into this feature, please use it). Otherwise, your only option is to wait.