Good stuff, but I don't like the angle solely based on needing the win. 5-6 teams are 5-6 for a reason: They are not very good. In many cases they get overbet.
That being said, when playing vs. potential unmotivated teams they can be good plays. On your list Pittsburgh is one I like. MFla had its bubble burst in the tough loss against Florida State and played listless (thanks) the next week vs. a RESTED Virginia team that was motivated. Pittsburgh is off a win and motivated. Miami appears to be playing out the string.