I split the subs about 40 feet, mostly to use as speaker stands as the show was all acoustic guitar and vocals. There was still a little content down there and there was music before the show and between sets.
About 350 people were there - here's some pics of the setup and a link to the short video....it was just shot with an iPhone, but you can hear the clarity of the vocals. I was way off axis at FOH. The conversion over to youtube added a little squeekyness on the top end - but you can still hear how the vocals sound like he's right next to you.
Opening act...

A little rack porn...


Here's the video....
http://www.youtube.com/watch?v=mLAkdfaIxG4