The stock spring is a 140 (At least it was on my 2008) for my regular two-up use Wilburs / MCT recommended a 150, Ohlins offer shocks with a 140 or a 160, so 165 sounds pretty stiff, I assume you got them second hand of some 40 stone bloke.
I would not worry as much about the extra lean, but if you find it a bit harsh you may want to consider a softer spring, especially if you don't do much two-up (where this spring will probably work very well)