Thanks for all the great advice! I should have mentioned the timing on this, but it was a week ago...
For various reasons (some of which were logistical) I ended up running the 414 cards ortf right in front of the duo, a single km140 on the guitar, plus the pickup. Because I was in a bit of a rush, I did not use the v3. For the first set, I did a mix of the 414's and the km140. For the second set, I added in the pickup. I have only played around with it a little, but I think I like the mix of all three.
If anyone is interested, I could post a sample.