live vocal mics

I'm new to this forum, and fairly new to recording and mixing in general.

I'm recording a songwriter with 1 large condenser; vocals and acoustic guitar. Also, I'm Micing a cello, and a violin with a RODE ntg-2 shotgun. I'm running both into a Zoom H4N recorder. 



Here's a mock-up of how I intend to set up. Nix the back-up singers. Any ideas or tips?

Much appreciated!

does anyone know what kinda mics professional broadway shows use the theatre i work for is looking to buy some new ones but I'm just looking to here about what are good ones and ones to stay away from

Anyone care to offer first-hand advice about buying better-than-average vocal mics for live performance? I am a part-time audio engineer for a small church. We could use some new mics. I currently use the SM58 and the Electro-Voice N/D767a. I have heard the beta 87a and talked to engineers who like it a lot. I have also used the AKG c1000 for some quick vocal recording.