Recommended Kessil Light for a nano tank?

[KVYA]

I have a 20gallon tank that has a footprint of 15” x 20” and is 16” tall. Planning on it being a mixed tank. I’ve been looking at the a80, a160, and a360. I feel like the a80 would be too weak and the a360 would be overkill. Do y’all think the a160 is the right choice for this tank?

 

[Spare time]

a160we would work but there are cheaper options out there. I am not sure who is saying buy a $450 light for a 20g but that is ridiculous if someone is saying the a160we is not strong enough for that size.

 

[Spare time]

These look interesting as an alternative Amazon product ASIN B07WX6LMQD

 

[Sailfin11]

This light (link) from Amazon might be a good option for a more affordable $50.