I took something half your size into Brizzy international the other day
It was $10.60 per tonne (min $60) and I had to book a slot ! First time I've ever had to book a slot! Just ring their number and ask how much to land and park, that's what I did for Brizzy. They will probably also sting you for parking if you are staying, Brizzy was $30 overnight minimum. It's user pays when you're mixing it with the big boys!