I did some searching on wowhead for this stuff. I may end up trying to get all this stuff because I doubt I can do heroics with s2 and s3 gear. Hope this helps. If anyone knows better items or has more info, please list it here. You need to research what starts the chain. I have not started any yet so I dont know what unlocks these.

The stormhide set is a full crafted set with resilience mp5 and spell. There are various reputation items that are not listed. Most of the below should be easy to get on all your toons. Its a great starting point for naxx and heroics.

Head (Crafted by Leatherworking)
http://www.wowhead.com/?item=43455 Stormhide Crown
http://www.wowhead.com/?item=43132 Nightshock Hood

Shoulders
http://www.wowhead.com/?quest=13109 Stormforged Shoulders
http://www.wowhead.com/?quest=13235 Giant Champion's Spaulders

Chest
http://www.wowhead.com/?quest=13219 Chestguard of Unwanted Success

Crafted Chest (Epic)
http://www.wowhead.com/?item=43461 Revenant's Breastplate

Gloves
http://www.wowhead.com/?quest=13047 Gauntlets of the Windreacher

Legs
http://www.wowhead.com/?item=43162 Ceremonial Pike Leggings

Waist
http://www.wowhead.com/?quest=13083 Chained Belt of Remembrance

Crafted Waist Leatherworking
http://www.wowhead.com/?item=43133 Nightshock Girdle

Feet
http://www.wowhead.com/?quest=13111 Scaled Boots of Fallen Hope

Crafted Feet Leatherworking (Epic)
http://www.wowhead.com/?item=43469 Revenant's Treads

Cloaks
http://www.wowhead.com/?quest=13164 Bloodbane Shroud or Bloodbane's Fall

Rings
http://www.wowhead.com/?quest=13124 Ring of Temerity
http://www.wowhead.com/?quest=13285 Ring of the Northern Winds

Mace
http://www.wowhead.com/?quest=13364 Hammer of Wrenching Change
http://www.wowhead.com/?quest=12948 Screw-Sprung Fixer-Upper

Crafted Mace Blacksmithing (Epic)
http://www.wowhead.com/?item=41384 Titansteel Guardian

Shield
http://www.wowhead.com/?quest=13142 Bulwark of Redemption