Hey guys, thanks again for all the tips.
I got some time and went back and addressed some of the mix-related shortcomings.
Guitar:
I only had one guitar track and didn't want to retrack the guitar again to get another performance to be able to pan. So, I reamped it through
Guitar Rig to get a slightly different tone on the right and get rid of the phase/combing issues of panning the same performance to opposite sides. It actually worked quite well after a bit of trial and error even considering that I didn't have the dry signal to work with(only the track I already recorded). I also mixed in a bit of the original at a really low level just in the center since it sounded a bit empty just panned to the sides.
Bass:
I panned it very slightly to the right to get somewhat out of the way of the vocal. I didn't want to go too far and lose the bass reinforcement of being in the center.
Drums:
I killed most of the bottom snare mic and parallel compressed the remaining snare sound with a pretty heavy hand(got this tip online and tried it and really liked it). I also killed most of the cheesy room mic sound and added my own reverb. Finally, I EQd the overheads a bit to smooth them out. The drums are definitely more forward in the mix now and sit pretty well with the extra space the panned guitars provide.
Again, I just replaced the original recording so the above SoundCloud embedded player will play the latest.
Thanks again for all your tips!