Any good WindBreaker builds?

My bad, I meant Wind Walk + Hurricane at the same time. I assumed you meant Wind Shot + Wind Walk + SE is out damaged by Wind Walk + Hurricane + SE because I didn't understand how you got 600% as your difference. Of course, you just ignored the fact that if you can Hurricane + SE, Wind Shot will have SE too.

No I didn't. It still outdamages Wind Shot + SE + Windwalk, which is quite logical because Hurricane deals way more hits, which means SE has a bigger impact on it.

The following numbers are only correct if Wind Shot + Wind Walk = 1260 ms total(macroing Wind Walk AFTER Wind Shot has the shortest/most efficient cast time) and Hurricane = 120 ms per shot.
All numbers are rounded down.

Regular:
Wind Shot + Wind Walk = 350% + 40% * 3 *1.3 / 1.260 = 1207% - 124% advantage.
Hurricane = 90% + 40% / 0.120 = 1083%

SE:
Wind Shot + Wind Walk = 350 + 132% * 3 * 1.3 / 1.260 = 1491%
Hurricane = 90% + 132% / 0.120 = 1850% - 359% advantage.

Advantage of SE Hurricane over no SE Wind Shot + Wind Walk = 643%