Hi I am starting work on some recordings for a friend soon and I am looking for some Micing suggestions regarding a beyer m-160 ribbon mic

The stuff we will be working on is acoustic guitar and vocals mainly. A kind of slightly folky slight nick cave kind of feel. The guitar is mainly fingerpicking so its not too loud. We will be recording the vocals separately.

In the past i have mainly used my AKG414 on acoustics around the 12th fret but I have managed to lay my hands on a Beyer m160 ribbon mic for this session and was wondering if anyone had used one on an acoustic guitar or voice with good results ? Any tips on placement etc ?

I will probably be using two mics on the guitar (a nice good sounding martin guitar) if I can get a good sound that way. My decent mic options will be the beyer ribbon, my AKG414 and a Neumann M149

My preamp is a single channel Great River ME-1NV and I also have a
D-Tar solstice preamp ?

If you had any good preamp, mic or placement suggestions it would be great to hear them. We dont have much time to record so I would like to be able to get straight down to it.

Thanks a lot
C