The second segment slope limitation is the climb (WAT) limit. The climb limit is based on still air therefore the wind correction is only applied to the runway limitation.
(Check out the climb limit graph fig 4.5 CAP698.-no wind input)
After applying the corrections to the runway limit select the MTOM for the flap setting.
5 kts tail = 1800kgs
Runway limit now 5 flap-64200kgs, 15 flap-67700kgs, 25 flap-69700kgs
Climb limit (no change) 5 flap 72200kgs, 15 flap 69000kgs, 25 flap 61800kgs
The MTOM = 67700kgs flap 15. (This is maximum for the runway and less than the climb limit)