You only need like 4 or so, whm only needs 1 - I have light, dark, thunder, ice. Fish were soloable at 75, they're hella easy to farm now. Finally got my light a couple weeks ago, I have to admit its a pretty nice boost, some day I'll finish surya's.

As far as "triple weather", we don't even have double weather so that's just overreaching. Weather bonus caps right now anyways.