I'm really a total amateur at suit building (I have different tastes in what I like on a suit), but some thoughts.
While you'll want to keep 120 Archery 100% real skill for special things, some of the items that can be mixed with loot or crafted items to boost your other skills include:
There's the minor Treasures of Tokuno arms that give +12 Tactics (but you might want to use that slot for something else)
Depending on what your template is, you might be able to find an appropriate Mark of the Travesty.
There are several Talismans with +10 in skill (and a luck one to switch to before a kill of a large foe), and if you are using a Whammy Archer template (necro archer in wraith form), there's a minor artifact talisman that gives a total of +15 (+5 in one, +10 in the other) toward necro and Spirit speak.
If you have healing, stitcher's mittens are still good.
if you don't mind only having 4 properties on a jewelry piece, you can imbue 3 skills to +15 on a ring or bracelet. (leaves only 80% for the 4th property). YOu might not want to go that route on more than one of the two.
non-skill items
It's possible to get to all-70s resists from just three items now, it's just that the items are probably going to be brittle (can't be powdered, but they repair and enhance just fine - just use a forged metal tool for the enhancement).
Everyone really needs a Lt Sash or its Blackthorn doublet equivalent.
depending on non-skill stats you want, there are several useful robes. Cloaks not so much, but every little bit helps.
Minax Sandals are good.