As far as a Law and Criminology go its a great department faculty wise. It is a really really small program as there are only 10 faculty, but on any give day you can walk down the hall and talk to every single one. As for Dr. Luebke he does still take students just not as often as most professors do as he doesn't teach very other semester because of his state senate obligations but he is still around from time to time, he is also running for reelection this year so tomorrow he may not be a state senator any more, although I doubt that he has had that position for forever. Although he hasn't written since 2002 he still presents at conferences from time to time. I wouldn't apply to UNCG just to work with just Dr. Luebke, the thing about the department is that they will let work on pretty much whatever you want and someone will support you. Your best bet is to e-mail him and pretty much every faculty member is quick to respond and don't mind responding.
To be honest the course offerings are not that great but you are only required to take 4 courses in the program everything else can be taken where ever you desire. As for information you tend to learn more about how the department works through the other grad students than from the professors. There are some professors that will chair your committee and let you do what you want and then there are others that will kind of hijack your thesis. Since your scores are similar to what mine were you may or may not have trouble getting funded.