Get

1. Felsteel Helm and Gloves

2. Do Keepers of Time Faction.
- Get the Sword with 40 Spell Damage.
- Timewarden Legs with 3x 12 Stam gems.

3. You want the libram that adds armor to Devotion Aura. Use Devo aura for Heroics.

4. Shadowmoon Valley Quest - There's a quest chain for a blue ring.

5. Get 12 agi enchant on that cloak--you won't upgrade it for a while. Armor enchant is cheap.

6. Grind your Aldor Rep to exalted for Chest vendor, and the Shoulder Enchants.
You can grind off the demons in Legion Hold in Shadowmoon. I spent 16 hours there over a weekend and got all the sargeras and fel iron I needed to get exalted. Exorcism owns those demons even if you're prot.

7. Blades Edge quest -- item called Natasha's something, neck piece.