Actually Arnold the J430 will take 4 * 80 kg bods plus 100 litres of fuel legally, it has an mtow of 760kg's nowdays.
The older J400 would take 4 * 70 kg bods and 100 litres of go gas.
Makes the old 172 look a little redundant.
I have a mate who frequently takes his Mrs and 3 kids and their bags away for your Birdsville type trips.
The J200 at 544 kg's under Ra-Aus rego and 350 bew gives 2 * 70 kg bods with 70 litres of motion lotion so agreed a little closer to the wind however still definitely a legal 2 seater.