Wotlk timewalk event this week and I wish to get the most out of it to gear up. I am currently on Warrior, Hunterx3, Disc Priest composition and gear is around 650-680 or so. I have never done timewalk event before since I started playing just when the time walk event were ending. But from what I read your item level, abilities will be scaled down to its content and in wotlk I believe its 80. Is it better to collect gear from heroic raids or its fine with the gear I am wearing atm?

I have been collecting tier tokens just for transmog purposes but I do not have any of the weapons since I have sold them. also, enchant and gems will be scaled down as well?

Thanks.