Backloading Blue Mountains
As Backloading relies upon trucks passing through your town if you are wanting to Backload from the Blue Mountains its best to check schedules and book ahead.
However, the best way to have both inexpensive but efficient moving services is to look for a reputable removalist that can deliver the cheapest yet competent service around. You could ask your relatives and friends for recommendations if they have previously moved out. These referrals could be a definite help, since you could trust the removalist more than looking for a new and unknown one.