In 10-13 knots take the 127/131 even in your low weight.
I love my 117Wide but its not for "light" wind. The 9.6 Reflex is a bit to big, the 8.6 down to 7.6 is perfect. Maybe the new 9.2 will be perfect as biggest sail.
For 127/131 best combo is 8.4 up to 9.7
Dont forget, if you have 10-13knts wind speed your board speed is limited to app. 1.5 times wind speed and thats 15- 20knts. Fin size for 15-20knts speed is round 50cm!! and thats 127/131