Yea, I'm mixing in Vegas Pro 9.  It's not that widely used in the audio community anymore it would seem, but I love it.  I've been using it for about 10 years now.  The rhythm guitars are the thing I'm having to give the most attention to so far.  Out of a 100% mix, I usually get to 80-90% pretty quick because I've been doing this a pretty long time now and instinct and ears get it down pretty fast, but the last 10-20% I usually slow down and take more time with, nitpicking.  
With that in mind, if you want to do some DI tracks, that would be cool if you want to.  I have some ampsims I can try on them.  If not, it's ok too.  I'm doing my best with the existing rhythm tracks.  Let me know either way.