I see, you might want to apply for one in WA too they're not a drama to get and may help lock you in to the current regs, in case something mad happens to them down the road.
I didn't know Perth was such a hot bed of car construction there's at least 3 40's and a T70 I've spotted on the forum all ready. Roll that in with all the Clubbies built and under construction in the state and there's a fair few people into the hobby.
BTW I'd recommend the joining
Car Builders Club if you've not heard of it already, they're doing a great job of keeping the DPI honest and straight and stops you feeling like a lone head case in the city. They meet next Thursday BTW.