A few ideas
Well, the song/style should kind of dictate how you mix it. It's hard to say without actually hearing it, but here are a few ideas that might get you creativity in a lather:
If you are mixing on a DAW, try panning the direct signal to the center. Then take your mic'ed signal and copy it to another track, so that there are now two tracks of the same thing. Pan them hard right and left. THen pick one side and slide it forward a few ticks so that it is slightly delayed from the other side. Now you have a really cool spreader/ chorus effect. You can also put the mic'ed int he center and the direct on the sides.
Of course you can always just pan your existing tracks hard left and right and put a nice stereo chorus on them. That's pretty standard.
How about this: Pan hard right and left. Stereo chorus. THen EQ one side to accentuate the highs, and the other the lows. This will make your guitar sound a little off-center, so you will have to pan something else to compensate, like a shaker (from your latin percussion.)
More? Pan them hard R&L, and put a tremelo one just one side. Adjust frequency to match the tempo of the song, and depth to your liking. This will create kind of a shimmering effect. The deeper the tremolo, the more shimmer you'll get.(I've heard both Daniel Lanois and Mutt Lange do this.)
Why stop now? Dupe the mic'ed tracks. Pan hard L&R. Completely dry. Now pan dircect track to center. Add a big, wet stereo reverb with wet mix at 100% and dry mix and 0%.
There are a million things you can do. THe tempo, and mood of the song, and the
acoustic guitar part will lend itself better to certain treatments.
I just figured I 'ld share some that I have tried.
Good luck.
Aaron
http://www.aaroncheney.com