I'm 210-235lbs depending on whether I feel like being agile or working on strength and power so my advice won't be the greatest. @ 165, you could get away with the stock suspension but a good start would be to put a zip tie somewhere on the fork and measure how much travel you're using during commute. Then do the same thing for the canyon/track ride. Also put down on paper how the bike feels in certain condition i.e my front end was vague manly during descending turns, how does the bike feel when you accelerate etc
Personally, I like it stiff but I must admit that when I get on a bumpy road it's not fun.
When you go to your next track day, have the suspension guy help you out. Even somebody famous like Dave Moss takes only 30-40 bucks so it's definitely worth it. My guess is that you will have to beef up the front suspension, because even though you're light, the 14 is a heavy bike and the front tend to dive under hard braking. Front end should cost $200-300. I've got the ZX-10 front fork kits (a bike that weight a ton less) and it made a HUGE difference, but race tech, k-tech or traxxion dynamics are all muy bueno. If you ride in a place with a lot of elevation change this mod is a must IMO.
In short, my advice for both of you guys is: go to a professional. People ride differently on different terrains. Think about racing in moto gp. The bikes make more or less the same power, they're build around the same tires (so chassis are alike unless you ride a Duc), and they use the same lines but the suspensions settings and tire pressures are really different among riders.
2006 Ebony Black ZX14, Flies gone, Power Commander V, Brock's CT-Single, Brock's Street/Race Map, Schintz Racing Flash, Brisk Racing Spark Plugs, BST Wheels with World Bearing Ceramic Bearings, Scott Rotary Steering damper, Ohlins KA544 shock, FPK Ohlins kit, Brembo GP4 RX Calipers, Brembo RCS 16, Brembo RCS 19 with no Drag Half Lever, Spielger Front and Rear Brake Lines, Braketech Axis Cobra Front Rotors, Galfer Rear Wave Rotor, Shorai LFX21A6 battery, Sato Racing frame sliders, Zero Gravity Racing Screen/MRA double bubble Racing Screen, Rizoma universal lux billet grip, Rizoma Next Fluid tanks, Rizoma Swing Arm Spools, Pro-Bolt tasty Nuts, Gilles rearsets, Sargeant seat, Geelong small tank protector, Geelong Hugger, Bike master magnetic oil drain plug, vortex gas cap, cox radiator guard, Xenon HI's and Low's.