Combining Meta Avatars 2 with Full Body Tracking

Hello everyone!
I'm currently working at integrating the Meta Avatars 2 and the Full Body Tracking (Movement SDK) into my Unity project.

Currently I have the avatars integrated with the animation behaviour, that also applies default animations to the legs and I have the body tracking working for a custom avatar. But now I'm wondering what is the best way to combine those two, since I would like to have the IK legs from the body tracking and the scaling capabilities applied to the avatars?

Thank you in advance!