Question [Q] Prime on rooted KF HD

Hi,

I bought the first version of the Kindle Fire HD (7"). I like to root it for using Google Play Store on it.

I have red, that it is possible to root the KF and to use all the prime features (videos and e-books) without any restriction.
Is this still right? Which custom ROMs support the prime features, too? (Kinology?)

Thank you!

Regards, Michel