Made a number of the same type of changes as you. The Corbin seat worked well for me. On the windshield I am swapping between the Calsci Touring and their shorty. Both perform super. I do not know if most would consider this a comfort item, but an ecu flash by 2wheeldynoworks worked wonders on smoothening out my throttle - makes me feel better. And almost forgot, a Traxxion Dynamics suspension upgrade was a massive improvement in comfort and performance.