Bard-Necromancer-Ranger

This class combination is perfect for one thing, and one thing only. Kiting.

Bard

When only kiting one mob at a time, the bard mainly consists of just running selo's for movement speed and other stat boosting songs, but when kiting multiple enemies has an AoE snare to fall back on.

Necromancer

Powerful damaging snare, and damage over time spells, that can whittle away a single or large groups of enemies.

Ranger

A powerful ranged auto attack that can be used while moving and does not interfere with the other classes. Has some healing abilities for if you get hit during your kite.

Equipment

Bards wear plate armor and should consist of most of your equipped armor, Hp/Mana Regen should take presedence over AC.

You will want the strongest bow and arrows you can obtain. For primary and secondary overall stats should be preferred, Stat Staff and a shield recommended.