I would be wary of advice from seminars :)
Whilst they are sometimes correct they aren't the ones who get in trouble with the ATO and can make all sorts of promises. However some offer excellent advice. The best advice is to listen then follow up with your own independant advice from a...
I'm assuming perhaps that the brother wants to get first home buyers grant for his property as well.
Who will live in the brothers IP whilst you are all in #1? Or will he buy it when you are ready to leave #1.
Timeline
1. Buy #1 FHB PPOR
2. Live in #1 for 6mths all together
3. Rent #1...
