Off grid installation advice

Looking to purchase & install a small solar system for a remote cabin. Prob only small compressor fridge (12v), few led lights, v small TV & phone charging in evening. Poss small inverter, 500w. No winter use, so reasonable to good solar days, but autostart Geny for any extra load or v low battery.
https://100up.com.au/off-grid-solar-ballarat/
Does such a system exist off the shelf? Where to go for advice about such?
Thanks

I've been eyeing something like this for my home:

Ecoflow Delta Pro.
https://www.amazon.com/gp/product/B0...987TZWZR&psc=1