My advice is to bring up the mix via a clipper. Don't get scared by the word, clipping, when done properly, is fairly inaudible. What it does, is instead of lower the peaks, it just chops them a bit. Then you can use an extra db or two of limiting. This is what is done in major mastering houses, but by clipping very expensive A/D converters. What you can use in the plugin world, is called the GClip. Find it at http://www.gvst.co.uk/gclip.htm You'll notice by using this technique of clipping plus limiting, your drums will stay much more intact and punchy.