I'd refer you to http://xivdb.com/?wardrobe/1596/Paladin-BiS-9-11-2013

Best purchases for Mythology would be your Valor Chest, Gloves, Legs, Shield +1 unless you get shield drop early from Coil (Turn 1) and Accessories. (Bracelet and Ring) Your regular Curtana will hold threat from Allagan + Relic+1 DPS.

Do NOT get boots. The Allagan are better and fairly easy to get. Valor Boots are a waste of 495 (2 weeks) of Myth cap.