Yeah im 5'8" and could hardly tip-toe the bike to begin with, fiddled with the suspension a little, according to the manual. softened it up a little. It helped me get to being on the balls of my feet so i was alot more stable. Being only 150ish the stock setup was too hard for me. I would agree looking at suspension setup before looking at lowering the bike
I bought a d675 with a psr lowering link on it as the chick that owned is was about 5'3". The front was adjusted as well- not sure about the specifics. I've since swapped it for stock as I dont need it. If interested I'll sell mine to you if you decide to go that route.
I'm 6'1 and can easily flat foot on both sides, but i have realized that in just about every scenario i still choose to to use the balls of my feet instead. Maybe because of better feedback from the road/bike and then i will have a faster reaction time just in case. Just something to think about and that way you don't compromise the bikes geometry. Grass isn't always greener on the other side!
All though i do completely understand wanting to be flat footed with a passenger. Flat footed does provide more stability with the extra weight no doubt.
-2011 Daytona 675-
Jardine RT-1 Slip on - GB Protection Bundle - Cox Radiator Guard - GP Rear brake Fluid Reservoir - Carbon Fiber Tank Pad - 1050 Throttle tube - Comp Werks Integrated Taillight - Tail Tidy -