I'm aware of that, but it doesn't particularly concern me whether they're actually insults or not. Thess threads don't go beyond rolls and IC dialogue.
What about WBL, Single class/multiclass, XP penalties, Level adjustment, Templates?
Additionally, what is the ultimate goal of the rogue character? I suggest retrieving a macguffin. Something kept in a safe or lockbox that is, once taken from said safe, easy to carry out of its location, no bigger than 1-2 lbs.
That way the rogue character can deal with the encounters in multiple ways, and if he chooses to avoid the guards on the way in, he will have to face them a second time on the way out, dealing with them as necessary.