As you can see from the picture of the 3 guys on the ledges, you could probably safely walk two-wide along that section, which is the short part of the ledges I was referring to in my earlier post. It's like a very wide sidewalk, actually. Just walk straight, hug the wall on your left (or right, on the return trip), and you'll be fine. Length of time to LBSL from the ledges depends on your speed, etc. and varies from person to person. I think someone else said 30 minutes, which sounds about right, on average, although I've taken a little longer, but that's just me.
As for your fear of heights, I had the same fear when I first began wall-climbing a few years ago. Learning to do that and getting better at it over time, went a long way toward overcoming that. So ya just gotta do it to get past it. It's really all mental. Get that part down, and you can apply it to any similar situation.
CaT
