My pick would be the cheaper 800Wh version for £6k.
It looks compelling on paper, but to me that bike is defintely in the full fat category of weight, without any of the benefits. Apart from having a shed load of power. If that floats your boat then fair enough.
I really liked the Loam Wolf analogy of their review of the Amflow bike
They said it s like having a 1000bhp car that is like a rocket ship in a straight line., but after a while you get bored of that and want the less powerful car that is just so much more fun through the bends, no where near as fast in a straight line, but more fun.
The fact that Amflow / DJI were very clear to only choose people who would talk about the powerful motor and battery before anyone else got their hands on it speaks volumes (see that awful arse licking review from GMBN)
I am not far enough in to ebike ownership, but for me the balance is something that handles well, not overly assisted, but has a tonne of power when you need it to just get up the really steep 30% fire road climbs. The amflow looks more compromised towards the loads of power than bike.
Wait until someone who builds bikes gets hold of it and that will be a game changer.