I don't agree with the "get your time and get out" theory.
Why would you waste six months of your career at a place you really don't want to work making low pay? You can make more money with almost any other flying job. It doesn't have to be as a CFI. There are other opportunities for low time guys.
Get 6 months of flight time and you will then have the option of where you would like to go. Make sure it is a place you wouldn't mind staying at for 4+ years. The 1000 PIC to a major is very limited right now since Delta, Northwest, United, FedEx, and Southwest are not hiring. If oil prices stay high there will be no get in and get out at the regionals (i.e. 2001-04).
Plus, when you do get your interview one day at a major they would prefer stability and a longer term employment history at your previous employer. What kind of employee are you going to be when you have worked at 2-3 different regionals, the shortest of which was for 6 months? If I were the interviewer I would think this person has either had problems or is going to jump ship at the first opportunity after being hired. (Does he really want to be here, or is he going to stay only until his first choice calls him back?)
My $.02. Look at the bigger picture.