The ability to craft a capped set of Elven, Scaled, Glass, and Dragonscale would only take 16 total perk points: 5 in Smithing, 3 in Light Armor (1/5 Agile Defender, Custom Fit, Matching Set) and 8 in Enchanting.
Elven Gilded isn't a separate set; it's simply a stronger version of the Elven chest piece. http://elderscrolls.wikia.com/wiki/Elven_Gilded_Armor has 7 more base armor rating than http://elderscrolls.wikia.com/wiki/Elven_Armor_(Armor_Piece).
I strongly recommend Elven because its ultra lightweight saves you perk points elsewhere and gives you more flexibility with your Standing Stone choice. If you limit yourself to Elven, you can cut the above 16 perks down to 13.




