Thank you so much for all that great advice. We have considered both Port Douglas and Palm Cove, so it's good to know our intuition is right on the money!!! Also we did think the opportunities for Chefing would be better Cairns way due to the huge tourist aspect.
and yes, we were told by numerous lovely people in Adelaide when we went that the weather wasn't the norm at all, but boy did we get a shock! Travelled all that way for the same weather we get in Wales, we were disappointed to say the least, but it did make us realise what we did and didn't want.
Anyway, thanks again, all comments are invaluable at this point.