Get rid of Synergy. It was cool 10 years ago, but Input Director is a lot better.
http://www.inputdirector.com/

I have been thinking of dual boxing sw, but without some major UI upgrades, I cant justify the costs to simply have a healer on /follow. I already have one with the companions. But it would be interesting to see or know if the companions are capable enough that you don't have to do more than dual box.