Welcome Dave
I'm no expert on motorised mounts, but from my knowledge an EQ6 is probably required for the 10" newt - particularly if you want to take photos. That kind of adds significantly to the price
I work for the State Gov and have some ongoing project work in the Burdekin area that sees me wander through Townsville every now and again. I will give you a bell when I'm next passing through and we may even be able to organise an observing session