Any good WindBreaker builds?

You're still doing it.

SE:
>>>Wind Shot + Wind Walk = 350 + 132% * 3 * 1.3 / 1.260 = 1491% <<<
Hurricane = 90% + 132% / 0.120 = 1850% - 359% advantage.(< This means the advantage over Wind Shot + SE)

Wind Shot + Wind Walk + SE is still outdamaged, which you would have seen if you actually looked at my calculations. The "+ 132%" is SE.

EDIT:

Magnum Shot + Wind Walk: (if Magnum Shot + Wind Walk = 1100 ms)

Regular(no SE) = 550% + 40% * 1.3 * 2 / 1.100 = 1394% (outdamages both Wind Shot + Wind Walk and Hurricane (no SE))
SE(at 2 target) = 550% + 132% * 1.3 * 2 / 1.100 = 1612% (outdamages Wind Shot + Wind Walk + SE)
SE(at 3 target) = 550% + 132% * 1.3 * 3 / 1.100 = 2418% (outdamages both Hurricane + SE and Wind Shot + Wind Walk + SE)

EDIT #2:

If Wind Shot + Wind Walk appears to be slower Hurricane might outdamage it even without SE. The same goes for Magnum Shot, but it still wins if it's about 100 ms slower(no SE 2 target then becomes 1278% (550% + 40% * 1.3 * 2 / 1.200 = 1278%))