Well, I'm on a 5 Spot just now and fancy a Burner. With the proviso that I'm a 6ft bloke who descends quite hard and will carry a little extra weight up to allow a little extra speed going down, if it was me I'd go with:
150 or 160mm forks (34s or the new Pikes maybe, probably 34s to open up the possibility of the Avalanche cartridge upgrade)
2x10 with a proper granny ring.
Light Bicycle co carbon rims on Hope or DT hubs
XT mechs, XTR maybe for bling factor, definately the clutch option.
Whatever your favourite brakes are
Your pref in dropper post
Nice wide Carbon bar on a short stem.
On the gearing, many people can get by with 1x10 but it'll always be a compromise unless you only ride fairly flat places or are very fit. I often consider going 1x10, possibly with one of those General Lee cassette adapters that gives you up to a 42t sprocket with 10 speed, but it'll always be a compromise, losing both low and high gears for a weight saving. I could just about get away with it too usually, but some of the local climbs remind me every time that I actually do need all the gears I have as I check for a lower gear every 30 seconds for 10 minutes, so I'd stick with 2x10, running 22/36 on the front and 11-36 on the back.