Oz, when my 2012 was new I went down to a suspension tuner I had used before, and with the preload wound all the way in (no lines showing) I had just over 46mm of sag on the front!
The rear needed about 5mm to get my sag to where it needed to be. I am a similar weight to you.
I bought some second hand forks from the US, as nobody could tell me if the 2011 springs valves etc would fit in the new forks (I hope there is more knowledge around now) I put 1.1N/mm springs in the front, along with 20mm Ohlins Supersport valves, the oil used was 10wt. I replaced the rear shock with a Penske 8983 sprung for my weight.I have put over 12,000 Kms on the bike since. The only thing I would do differently, if I was to do this again would be to change the dampening in the forks slightly, as I think the dampening is a little on the weak side, but I do ride on some bloody awful roads!
This was the best mod I have done to the bike to date, the bike handles a lot better than standard, & I have a lot more confidence in corners.
Hope this helps.
Neil
Penske 8983 Ohlins 20mm supersport valving Racetech 1.1 N/mm springs Powerbronze carbon hugger Akra headers Akrapovic titanium mufflers Muzzy sliders Cox rad guard Vortex rearsets Throttlemeister bar ends Zero Gravity DB screen A-Tech front carbon fender Hel SS braided brake lines Clever Wolf carbon tank guard DNA air filter MDI carbon ram tube covers Brock's/ Ohlins steering damper Driven fuel cap Ventura rack Driven D-Axis grips PIAA headlights Muzzy fender eliminator Bestem carbon battery cover Custom ECU tune.