M/S can be good.
Some folks like two mics. I kind of like one (especially if the guitar will be used in a mix with other instruments). In fact, I typically use one mic for guitar
and vocal. But then I'm lazy.
I strongly recommend you experiment with all the techniques at your disposal, even tracking with all three onto separate channels (if you have enough AD inputs) and experimenting in the mix. (Mind you, I, personally, don't care for the sound of
most acoustic guitar pickups. But it's a big world and others have different approaches and preferences.)