Hey mate I breed the Western Beardies and they are easy to keep and great personalities.
I keep frill necks as well they are much harder to keep then the beardies and need a much bigger enclosure and more heating.
I keep my 4 adult WA frill necks outside on a North facing wall in a aviary and they are doing fine.
In winter I bring them inside and they are housed in big enclosures with a MV Globe (Mercury Vapour Globe) that gives out a **** load more UVB than any other UV light on the Market, Herp Trader sells these globes.
The frill Necks eat around 30 Adult roaches every 2 days, when the beardies only eat around 6 Adult roaches every 2 days
If you are just reading up on the licensing in WA, to obtain cat4 you would need to have had cat3 and a cat3 animal for 1 year before you are allowed to upgrade to cat4.