There's 225 hit in that setup without Polar bracers. It's an alternative item offered in the event that other hit items are missing for the Horde's sake, namely Signet of Twilight and/or Apoc's. It's easy enough to disregard it, but just answering since you asked.
The lists provided here are ICC/RS bis lists, so they won't be much of use. The guide does cover stats though, which should be helpful in determining what stats you want on key items. That being said, myself and others would be happy to help you out with item choices.
You should definitely go for your 4-piece set bonus. For a weapon, if you can manage it, get a Battered Hilt or the weapon off of Marrowgar 10 (Citadel Enforcer's Claymore). Otherwise, your next best options are going to be weapons from Trial of the Crusader. I would also ask if you have enough achievement points to earn points on the website. Because, if so, you can work towards getting a nice weapon from there if you play on Icecrown.