Here is what I do...
First it depends on how acoustic driven the song is going to be.
If it heavy driven by the acoustic, I use the following.
Audio-Technica 4033 set flat, no pad, no roll off, positioned just about 3 or 4 frets up pointed a little down to stop sub rumble from going direct into the diaphram, just a little off axis. I the use a mic like a Shure KSM27 that has a nice round low end facing directly at the butt end of the guitar body. Last I use a ribbon mic for a room mic.
Just play around with EQ and blend of all of the tracks....sometimes instead of the ribbon I will use a second 4033 facing a reflective wall, it gives me a nice gentle delay...us the roll off on this mic to kill some of the low end garbage reflections. Main thing play around with different positions...romms can do cool things when you find the sweet spot.
If I am using the acoustic for just a rhythm track, I use 2 of the 4033's one closer to the sound hole, one further away almost directly behind the first, about 8 inches higher and rolled off...do what sounds good in your room...and trust your ear.
SMG