so im building her for dps xianyun and wanderer, i have her c2

for the artifacts, do I use tenacity or emblem?
and about the rotations, is it necessary to use her right before the dps? I'd prefer using bennet after faruzan so it'll increase bennet's burst duration

her c1 (or c2 i dont really remember which one) gives her two special anemo charged attacks, are they just for her personal dmg or do they give some sort of buff too? should I use them during the rotation?

last and obvious question, is it necessary to lvl up her skill too?
Few questions about Faruzan