Cavedale is by far the hardest. Best done first thing so the walkers don't have chance to cover the loose greasy rock in gloopy mud just to add to the slipperiness. It's perfectly doable (although tricky on an xc hardtail) – you just have to be prepared to go where the bike takes you.
The Beast is fun. Easy enough to get down, a bit tricky to ride *really* quick though.
The thing about JL is that it's very easy to tie on some real speed and find yourself getting out of your depth. The bottom bit after the gate is getting really rutted, and after the hairpin is now proper rocky – the last couple of times I've done it I've ended up using the gate to stop at the bottom, simply because there's no where else smooth enough to brake on. 😳
Now – how about chucking Chapel Gate into the mix – obviously taking the gully on the bottom bit below the gate. 🙂