You would have to check the oil content of the fuel vs the oil requirement of the engine. I am unfamiliar with the Tower fuels.

The oil content of PowerMaster fuels is adequate to protect most 4-strokes if you adjust the mix a couple of clicks richer than normal on the high speed needle. (a good idea any time... is keeps the engine cooler... less wear.. less troubles.) 16% oil in the PowerMaster Sport blends.

The 10% nitro is just fine... But I have heard that Saitos like a 15% nitro blend a bit better. I run 10% and 15% in my O.S. .91 (with no notable difference... not even a needle setting change needed...)

I've never pushed my 4-stroke for max power... on the triplane I set the throttle linkages such that 80% throttle was the max I could get. (its all I needed and then some.)