on Game Quellious I used to 2box a 64Necro/58Bard.
Bard would play selo's and I would run wherever I wanted to camp at.
When pet tanking, I would pulll start bard singing DS song, switch to necro, pull and let pet get agro...
throw on a few DOTs and switch to bard.
Bard would come in and attack from behind, twisting heal/DS/DD song, switch to necro to re snare/root/dot as needed, back to bard.
With Kiting (fear or normal) bard would just tag along sining heal/mana or I would target mob and sing DD.
since you guys are having two people playing... you will be able to tear through mobs w/ nec/bard combo!