Hi Aaron. Thanks for the props on the site. I can't give you any specific advice regarding the play at those stakes at the Mirage. My experience at Vegas casinos, however, is that the players are all pretty bad at the lower limits (2-4 up to 4-8).
I've played at the Bellagio, Monte Carlo, and Palms, and the players were all pretty poor. They played loose and passive, checking but then willing to call a re-raised bet.
Maybe review your Sklansky books, and play a tight, aggressive game against those kind of players.
I haven't played the 6-12, so I don't know if the skill level improves, but at 4-8 they were horrible at the Bellagio.