Yep def some good advice above, including Joanne's about using a DI. There really are some good acoustic guitar pickups around. I have the LR Baggs Anthem which combines a small condensor mic inside the guitar with a piezo under the bridge. I don't use it for recording (it's for stage) but I might in your situation. Plenty do.

Otherwise I don't find close micing my acoustic really works if that's what you're thinking. You just get the sound from that part of the guitar. It'll help cut out ambient noise but at a cost. I also think a bit of room sound can really enhance an acoustic.