Hi Mucci, I like the rotors and the write up. The only thing I would change is the bracing via the mudguard/fender.
Mine was quite sensitive to road imperfections until I fitted a dual loop steel brace. i was pretty sceptical that it would do anything, but it did.
So where you have spacers to fit the standard pressed brace, I can only imagine it give a little more flex.
I find the dual standard discs quite good, now rebuilt. My friend has a Harley Sportster with single disc (+100 lb of iron engine) and describes it as puny. I can imagine a single disc on the R65 is something in between.
He never goes much above 65MPH, so for him to complain about the brakes means it really isn't great!