Editing Ambience on Live Horn Parts

I have an 8-track live concert that I'm editing that 1 track is a horn, and other wind instruments. The mics on that are close-mic'ed, but they still pick up significant ambiance. Now, while I do want some quality ambiance in the final mix, the source that I'm using for that is 2 suspended AKG 414's about 9' in front of the choir, and there's nothing between the mics and the audience. That ambiance sounds great.

So, I could edit the ambiance out of the orchestra track, but it would quite painstaking and time consuming as there are 16 songs to do. Although, I'm thinking I may have answered my own question by virtue of the fact that that particular track was recorded with a pretty low signal because we had no one to monitor that PC we wanted to avoid any digital distortions. Having said that, if/when I amplify those tracks, if I don't edit the ambiance, that too will be significantly louder too; maybe even loud enough to drown out the ambiance that I want to keep on the choir track.

So, there's my options. Any suggestions on how to efficiently maximize the quality on all levels?

Tanx,
KC