Always happy to help,
Yes i do know where Bull creek is though as i live in morley it might be a better thing to meet down at Curtin University just for a start. Im also trying to organize a trip out to a dark site to take our 12" meade out.
It wont be till after christmas at the moment, just too busy with all the christmassy things going on. But definately keep in contact with me.
The other thing that you will need to learn having a reflector is Collmination regardless if its a Dob or GEM and is required pretty much every time you use it to make sure everything is in line!. apart from your Barlow lens, you can go one of 3 ways, Get a laser collminator or a ceshire eye piece or combine them both but do get at least one they are about 50 dollars for the laser one and they themself must be checked for collmination. Collmination is a awful beast if you don't understand what your actually correcting

.
I have made my own Laser colmination tool and brought the ceshire eye peice. So ill give you a good rundown on the proceedure if you want.