not a problem for me at 6'2", but if you lower the rear you should probably lower the front forks through the yoke as wellto keep the angles similar.
think a cut down seat is a better option.
a little tip that i learnt during some rider training is when you come to a stop at a junction where you will be putting your foot down, look down a bit to that side just as you come to a stop and that will lean the bike onto that foot so that you feel more comfortable