I used to have a Golden knight 1.80 and it worked great for me!
I was using CoolPower 10%N-17% oil, fully synthetic with an 18x6 MA prop.
You can see a video of my other
Saito FA-150S which is basically the same as the 180 but with a little less power.
https://www.youtube.com/watch?v=LVMNLNB_j-k