Hi, Donal. It’s been 18 days since I was there, so everything I say will be out of date. When ascending to LBSL, the “trail” crosses right to left. People usually step on rocks and branches to hop across. No wading. The next crossing goes near a small waterfall. You will probably get splashed, and you may step in a couple of inches of water, but it shouldn’t be a big deal. The ledges start shortly after the second crossing.
The “Final 400” was mixed snow (both soft and consolidated) and rock, but no ice. No telling what it’s like now. Yes, you take a left at the top of the notch. You should see plenty of tracks going up. You can follow those tracks or go up the rock to the right of the tracks.
Your description of the “Easy Walkoff” is right. It avoids the rock climbing, but it can be deceptively sketchy at times. However, it looked really easy 18 days ago.
