I find PLO at those limits really tough to play for the exact reasons you mentioned in your post. Do I think a TAG player can win these, yes I do. Play good hands and only chase the nuts...not 2nd best. You should also consider slowing down your betting with 2nd best flushes, straights, etc. Don't bet out, check so you can somewhat control the pot amount. Having said that, I've also found that once you get rid of the initial riffraff, the players get better. This is the point where you aggression should increase with what you chase and how you're betting. Of course having said that, you need to see who's at your table. If its all calling stations, then continue your TAG game until you see a worthy opponent.
For what its worth, if you're going to continue playing micro PLO or PLO8, you're going to learn tilt control and patience. If you don't, there's a pretty good chance you're going to go broke...take it from somebody who's done that himself