personally, i would get 2 pieces of satin, and 2 pieces of mooncloth, for the 2x +35 resil. your going to want to stack a nice bit of resil. since you will usually be the primary target.
If you're shadow, it can be worthwhile to get 3/5 Satin with the Mooncloth shoulders/gloves, for the extra resilience. As a healer (which you most likely are as Disc/Holy), I'd go for more of the raw healing from pure Mooncloth.