I'd do a little research into both those websites before making a purchase. They both look like nice costumes, but I'm a little suspicious of the first website due to the lack of stock photos. It makes me think those images may have been taken from a cosplayer's profile.
Either the Scruffy or Wisp from the Cosplay.com wig store could be made to work for Sheik, but just know that it can take a long time to get them.
2015 Cons: All-Con - DCC - A-Kon - AFest - Fan Days - ANT
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Planning: Visas Marr | Four Swords Zelda remake | Princess Hilda | TP Zelda | Jarael