Enter The Haggis - Two Bare Hands

[Mixinthecloud]

I think you may be relying to much on the master buss to solve issue of individual instruments. Try gating the kick and snare and using compression on each and maybe buss compression on the drums. Don't be afraid to radical with eq and processing on the bass as well. Your goal is the get the vocals to sit well with the ensemble without burying either in reverb. High passing the over heads and filtering the audience/chamber will also help. Take you reverb cues from that result.