So, i started multiboxing. (3xShaman)

Started mutliboxing yesterday, as i wanted to try something new. I simply love this.'
So far, i've been running 3x games on my computer at settings all low. I've read alot about if before i started, atleast it feels like it, but there is still alot i dont know it seems.

Anyhow, i have a few questions.

Iam having a fracture small lag sometime, and i've tweaked every singel setting ingame/outside game to make it better. So its max, alot better then when i started, but still coud be better. Any suggestions to make it better?
When iam hitting 15, iam gonna start boosting with my lock, as this goes really fast. I was wondering if there is some guide for how to set up keyklone over 2 pc's?

Hope my English isnt that bad, Regards Volch0k.

Edit: Also wondering, shoud i soloquest em from 45 to 60? Since i cant boost myself. If not, shoud 1 be enchment while leveling?