Yeah, route looks straight forward enough. It's half an Edale skyline walk. Not sure if it's worth the big detour to Kinder Downfall in this weather... there'll be no downfall to see. I'd be tempted to skip it and instead, use the extra time to carry on from Brown Knoll up to Mount Famine, and then back to kinder via Kinder Low End
Edit: Although I've just noticed the date of the last post so you may have already done it by now