Trying to figure out what will happen to a base is anyone's guess. All there is to tell you is right now Detroit is massive and that's where you'll go out of training. If you're 6 months from training, it could all change by then...if longer than 6 months just don't even bother worrying about it now.
From my interview to class date(which was only 3 months) the same thing happened to MSP and that's what I was planning on. Just figure it out when you get on property. Now MSP is obtainable almost the same time as SLC. Nobody can predict these things.