I'm about to order some '10 Fujas but just need some reassurance on which length to get. Pretty sure I should get the 189s but don't want to spend a load of money and realize I chose the wrong size. I'm 6ft 4" but I'm not a heavy guy at around 147lbs. I know the rocker will make them feel shorter but I have also heard that K2 actually measure about 5cm longer than the stated length. Any advice?