A350-1000 with more range - Update II

I made a quick assessment how the new -1000/-1100 family could look like:

Pax    350    380     380
Range  8500 nm  8000 nm   8500nm
MTOW   314 t   318 t    331 t
OEW   152 t   157 t    159 t
SLS TO Thrust   98klbf  100klbf   104klbf

I enlarged the wing, so that the A350-1000 keeps the same wing loading.
I have to admit that this is a very rough assessment as I have not looked into things like climb times, takeoff performance and so on...