Id get the race face turbines, the standard ones like ali runs would be stronger or the cinch ones like i have.
Im biased but they look better than the others and if ali bends shimanos and race face are fine with him, they will last us.
Do you want 170 or 175 length arms?
You need cranks with a dual spider, one set of bolt holes for your 22t chainring in 64 bcd, bolt circle diameter and the other holes at 104bcd.
You would also want a 68/73 bb, to suit whatever crank spindle size you get.
For my crankset you would need.
http://www.chainreactioncycles.com/mobile/race-face-cinch-30mm-series-bottom-bracket/rp-prod113372
BB in bsa 68/73
http://www.chainreactioncycles.com/mobile/race-face-cinch-direct-mount-crankset-spider/rp-prod113259
Double 104 bcd
http://www.chainreactioncycles.com/mobile/race-face-turbine-cinch-direct-mount-crank-arms/rp-prod125720
Cranks in 170 or 175
You would also need a 64 bcd 22 tooth chainring. I use middleburn.
And a 104 bcd bashring and bash bolts.
@Jack Heard