I have heard a lot of good things about this little mount so I'm sure you'll enjoy. As for some of the more generic questions...
From Melbourne the SCP is about 11° west of magnetic south and about 37° above the horizon.
Depending on where you are in Melbourne, you may have a lot of trouble finding them. I am in the northern suburbs and they sit right in the middle of Melbourne sky glow for me, I cannot see them
What you may find more accurate is running a drift alignment. Depending on the camera you're using, BYEOS (for Canon) or BYNikon (for Nikon) are two good bits of software for running a DSLR and have drift alignment stuff so that you can use your DSLR.
Is I have never used any of these software packages or used this particular mount, much of what I say can be ignored.