Went with Ratebusters for the loan.
We just got pre-approval for a home loan with ratebusters. Essentially as they are cheap in the long term - though there is a bit of a fee hit in the short term I think it is worth it. Also they were the most helpful (both talking with them and the general information available on their web site) and the “up to 10 splits after settlement” feature combined with the 100% offset best meets what I am trying to do with investment plans.
Now the hard bit of actually looking for a place.