i can already tell, you don't have enough mids, way too much bass. there isn't enough lower range highs, and a bit too much upper highs. Run a high pass at 120, a low pass at 12K, use a high shelf and bump up the highs a 5K and slightly raise the mids (about 700 with a Q of 0.5-.03). And most of all double track. If you want a tight sound where you can really hear the details of the guitars, do not quad track, if you want a wall of huge sound quad track, but keep in mind quad tracking takes a lot of tweaking to get a mix right, overall you can get a good result with less of a headache with dual tracking.