Hi Perohijo;

I am a bit taller than you. I put a Memphis Shades Hot Wing Booster on my F6B and now I can hear the radio at 65-70. Before that too much wind noise.
The wing booster is like an extension that clamps onto the top of your windshield. It is very stable and easy to install.
I wear a modular helmet and foam earplugs if that makes a difference at all.

WEG