[MikeBmusic]

I would not use hard panning (100% left and 100% right) on a 2-mic acoustic set up mix. Doing so would make it sound like your head is placed between the two mics (face on the guitar) when listening to it!
Instead I pan them about 10% apart and then together to one side or the other (or centered with each 5% off center, if you prefer).
It's a tip I got from drum mixing - only if you're sitting in the drum kit do you hear the hi hat 100% over to one side, the floor toms 100% over to the other, etc. If you're out in front it is much more condensed (I use the 'width' control in Reaper, which can move everything in toward the center, regardless of actual panning location).