I think douglasj thought you meant set bonus. So his answers are correct regarding set bonuses (you'll need to wear a full set to get its set bonus), but CoorA works a bit differently.Savanc, if you use a single piece of a set to get full set setup, does this count as full setup to?
If you're talking about CoorA, then you need to wear only items that are part of a set. It doesn't matter if you wear all the items of a set or just 9 items that each are part of a set, but they aren't part of the same set.
SH only looks at full sets and it doesn't mind if you wear some non-set items on the side.
[*:c1hniq6b]The 500 setup you mentioned has 3 full sets so it will get a bonus from CoorA (8.75%) and from SH (3x 8.75% = 26.25%). So you'll get a total bonus of 35%.
[*:c1hniq6b]A setup with 9 items that each belongs to a set, but they don't belong to the same set will get you a bonus of 8.75% from CoorA and none from SH.
[*:c1hniq6b]A setup like your current 575 one (3 sets + Ring of Limjarrin) will get you no bonus from CoorA (because Limjarrin isn't a set item) and 3x 8.75% = 26.25% from SH.