Nice room. Cool gig.
Either of the above suggestions should do very nicely. Get close, like anywhere from the front row of seats to the front of the stage. How you setup the mics depends on what you can get away with. Front row high might not be cool. Even if you have absolute free reign, consider of audience sightlines.
One wild card is the trumpet which has a very directional timbre. Depending on playing style the trumpet could blast high front row mics, since good players tend to point the horn up for high dynamic parts so they don't blast the audience too directly. Piano can easily sound more distant than the other instruments if too far back.
Omnis spaced 2' or 3' at stagelip should work really well and can be set low for no sight blockage. If you don't have stands you can lay the omnis on towels or something on the stage itself, 'boundary mounted' against the floor. I've made smoking trio recordings that way myself. Omnis will provide more flexibility for whatever arrangement of players occurs and should help balance things somewhat. Boundary mounting them on the stage itself can also help increase the direct sound clarity if the room is overly reverberant.
Another approach would be to sit in the front row on the isle with the mic stand directly in front of you and mics chest or head height so you block no one's view but yourself. Don't worry about being too low, from the front row the mics will have a direct line of sight to the instruments.
Have fun with it.
Topic: Wooden reverberant space. Placement and capsule choices. (Read 2430 times)