Its good to hear you've emailed them. Yes it's true, I was aware they had fairly low training costs, compared to competitors around the region.
I think they've got a couple of piper arrows, warriors, c150/152s, a few twin engine ones, +more.They also operate in Moorabbin as you most certainly have found out; which is nearer Melbourne than Bacchus Marsh. However I think lodging is only available at bacchus.
If you emailed them the 23rd; then the reason you didn't get an answer is because there closed; thursay is the only day there not open.
best of luck, cheers