What I did was build my own 1 meter bar. I use the Shure vertical mount, and put the cards (sr-77's) on them, then I run two Omni's (QTC-1's) 1 meter from each other on my home built wooden bar.
If you opt to use four mics, you must almost always use some sort of headphones to really mix on-location. Last week I left my earphones at home and tried to do it by the seat of my pants (ie. flying blind), the tape sucks and I apologized to my buddy whose band it was that I was recording. Mixing is probably the hardest thing to do with the four mics out in the field.
Wayne