One thing I would like to add is that selecting a JUCO should be done as carefully as selecting a 4 year program. Two JUCO programs can be as different as day and night.
Some JUCO programs recruit top players and are very competitive to sign with. Others are a whole lot less selective. The same can be said for the academic end.
JUCO is not just an alternative to D1,11, or 111. It is a route that requires just as much research.