Personally, i like Elite Kurzick Armor and Dwarven Armor. Then weapon wise, for a fire ele i use Rago's Flame Staff, and earth i use Galigord's Stone Staff. I don't do much water or air, good luck.
i always have ENERGY STORAGE as my weapons. This means i can use fire/water/air/earth builds and dont have to change my weapon and the 20% enchant mod isnt requirement specific (so it works on any enchantments in ur bar).
I'd agree with Rago's Fire staff , as for armor, depending on your taste (and how much cash you got) I always find 15k sets look better than their 1-5k counterparts. As for a specific set, I've always liked the Dwarven (is it considered a set even, or seperate pieces that make up dwarven?) , and the oh-so-overrated FoW armor. You can argue its just an "Im-richer-than-you" armour set, but i like it because its different than the typical recycled-skin elementalist robe-like armour.