I don't know about the primary carer thing, but our FTB has always been in DH's name since Sam was born, even though I was the one who stayed home with him for the first year and then again from when he was 18 months old. Now that I have a DSP, we also get rent assistance - which comes in with DH's FTB payments. We're eligible for it because I have the DSP, but it just tacks on to what DH was already getting.

We've never had to deal with PP, so our case is a little bit different, though.

BW