It's curious you're so concerned about the speed limit but so flippant about breaking another clearly stated law about how you're supposed to operate your vehicle.

Here's one general tip - it's your job to follow the law, not enforce it. The fact someone would have to go faster than the speed limit to pass you is irrelevant - you are supposed to be in the other lane unless you are passing someone or getting off the highway. If there are more lanes, the same rule applies - you should be in the furthest right lane that allows you to maintain your speed.