The top bit of Deep Gill isn't particularly nice, quite loose and blocky wet rock. I wouldn't fancy descending it.

Broad Stand: the only bottleneck is the bit at the bottom but you can avoid this if you have rope and harnesses as there's an abseil point almost directly above the point at which Mickledore abuts the crag. I've used it in winter, it's about a 12m drop.

Unless you are confident then I'd consider Foxes Tarn to be the most reliable option