All Toyota Hybrids irrespective of climate the recommended viscosity is 0w-20. This is critical for the safe operation of engine.
To strengthen my argument further, the locally produced Honda Civic Turbo also uses 0w-20.
To best of my knowledge, LiquiMoly 0w-20 Special Tec is semi synthetic. whereas Toyota Hybrid require fully synthetic 0w-20 oil.
As regards to ATF Aqua uses Toyota ATF-WS.
Still you want to experiment then its up to you.