Hey Simo,
I'm a "towering" 5'5 1/2" (70 years have stripped away 2", from my all-time "high") with a 29" inseam, and not only did I find the stock seat a little too high on it's low setting, but also really friggin' uncomfortable, after 27 years on an '81 750 Seca that fit me like a glove! How Yamaha could possibly go backwards in comfort, over those 27 years is truly beyond my ken. . . Anyway, after my first 250 mile ride (had to take a break after 125 miles), I got a Corbin from somebody here on the forum, and road that for about a year; it was a step up in comfort, and brought me a bit lower to the ground, but still wasn't . . . ummm. . . all that comfy, so I wound up trading my stock seats for a Rich's custom, straight across, again, to someone here on the forum, and man, I love it! Not sure I'm any closer to the ground than with the Corbin, but it's definitely more comfortable!
Hope this helps!