I currently use Fastway for larger business-to-business orders. Custom sized boxes, not the satchels.

I would only recommend postage to commercial addresses and never a residential address as they will take ages just to deliver. As mentioned by tstore, rural areas are a no no as well. We had a few parcels take 2 weeks to deliver to a rural area because drivers would not drive the distance. Rural areas are "scheduled" for delivery when there are more orders in the same area or one time we had a parcel sent back to us because they didn't want to deliver it so far!. Use AusPost instead for these areas.

If you really want to send to residential areas then you need to talk to your buyer first and find out their best time/day to receive the parcel. I.e. My customer said she's happy for any parcels delivered before 9am so what I did was wrote a message on the box "Deliver before 9am" and it turned up just fine within a week.

How do I find them?

They assigned me a driver in my area and I call them up to pick up parcels. From memory the pick up times need to be before 12-2pm for same day. Another way is to call the local office and they will arrange another driver to pick up the parcel.

Delivery Times?

Most of my deliveries go to NSW and that takes around 1-2 days. SA was 3-5 days.