basically summon nec need physycal char gear with phys pierce and enchanced damage as much as possible. Your skeletons benefit physical pierce and enchanced damage from gear.
act 5 merc for stun/slow with any good sword with aura
So try to find titan/rage essesnses and craft rare rings/amu/weapon with titans, armor/helm with rage.
Boots/shield with rainbow essenses for maxres boost.
Also try to buy armor with ed/+1 teleport from charsi/anya and make guardian runeword (Tor Cham Shael Um)
Farm cows with 7 loaders, plaguelands , keys for ubers, act 1-5 bosses for fragments.
Dreamlands (tristram), lichking (plaguelands), travincal portals (ff8), time rift (a4 river of flame portal) are the best places for farming uniques.