I've been looking to setup a complete just for stairs/transition. I already got some Indy 149's, but I don't know if I should get an 8.38, or an 8.5? Is it a noticeable difference? I don't want it to be too wide, seeing as how I wear a size 9, but I don't know if an 8.38 is wide enough for stairs/transition. Every 8.4 I've found has too short of a wheelbase, so that's out of the question.