Audio Fix - Northwest Now

I produce the Northwest Now TV show in Seattle. We taped an in-studio interview with a man named Kwabi who has a VERY booming voice. I think our audio operator brought him way down, but that some of his audio bled into my (the host) mic creating three problems: low level on Kwabi, a bit of room noise, and a loss of presence. I am seeking somebody who REALLY knows how to make fair audio, good. I've completed my attempt at a "fix" on this - but I want an expert to give it a crack too. The segment is 20-minutes, and I've exported an 770MB .mp4 to keep the file size down, and I also have a 25GB .mov file. Both are too big to upload through this application so we'll have to use Dropbox I think. We might also just be able to work with a .wav file that I could re-sync with the video. Once I am working with somebody, we'll figure that out. This is for broadcast television - so I need somebody who really knows audio, Adobe Audition, and is detail oriented enough to try to isolate and improve Kwabi's portions of this muxed file.