For winds' assistant skills it's 49 wis and 7 int.
The build I'm going to do is for Fatal Blow.
Str:7 (Scroll off to Agi after rb to knight)
Con:0
Int:7
Wis:49
Agi: 482
Wind knights' capes get 2x spd and even more spd when riding a pet, even without a saddle. But if you have a saddle 1/2(Yes its 1/2 for wind knight) of that pets spd will be added to yours. I'm not gonna get too off topic put most ppl make wind knights for their JS.