After brokers opinions on best way forward. Looking to buy an investment property for around 650k. Currently have property worth around 300k, owe around 120k (I have 100k in an offset against this property). My question is should I borrow less and pull money out of the offset for a larger deposit to make it a 80-88% lend to save on loan mortgage insurance, or should I borrow the maximum amount possible? I'm thinking it would be better to borrow the full amount to maximise the deductions as the currently none of the other loan is deductible? If I pull the deposit money out of the offset for the new purchase will the interest on that be deductible?