Will lag be a big issue with multiboxing? I get about 60ms lag with 2 at once. Will I see marked declines in latency?

Sometimes I get weird lag now where one of my characters can not see the other who's following and it won't resolve unless I relog. This is not common, but just wondering if anyone else gets that kind of stuff. Anyway, I pretty much have my mind set on doing this either way.

EDIT: I changed my mind, I am going to make 4 shaman and then use the priest as I usually do on my other account. It's going to be more work for me to learn a new class and level 4 new characters at once, but the fact that I could have nearly unlimited resurrection with the shaman seals the deal for me. Plus there's just something more terrifying as an opponent to see all those totems...

I got the CloneKeys program and it works fine, just need to get a new computer before I can really do 4 on one computer.