Sounding good! The only suggestion I have would be to bring the guitars a bit further up front (bass and rhythm). Also, I don't know if you've got the rhythm guitars panned hard left and right or not, but it sounds like its all getting kind squished in the middle. That should give it a much more open sound to it. As far as mastering, a little reverb goes a long way on the two-track as far as giving it a wider stereo sound.
Keep at it, can't wait to hear more!