My strategy has been to grind the 5 AP quest until I got enough Bronze for all the Ascension Mats (running it several dozen times also got me a Nightless Rose for free), then the 10 AP quest until I got enough Silver for all the Ascension Mats, and now basically alternating between Idols and China to get Gold. I'll probably focus on gold for the rest of the event to get either all those mats or extra copies of Nightless Rose, especially if another one drops and I can hypothetically max limit break it.

Or I'll say screw it and grind Bronze/Silver for XP. I love XP and hate doing dailies.