Mocap to Rig issues

I’m new to this and having some issues, the rigs don’t match which is something I’ll have to fix. But there also seem to be some issues with the axises or how it translates into the new rig. You can translate it from world space into local space, or local space into local parent space and I’m not sure what to choose. Any heads up on this would be appreciated before I buy a subscription for the mocap app.

I guess matching the rig is a good idea, having the x axis face forward. But what about the translate option, they’re not the same size. What option would you choost at the bottom of the constraint copy rotation window? Thanks.