Agree JUCO could have advantages from a financial and baseball perspective, but the best friends I have to this day are from college. That's because we spent 4 very important years together. Kids may miss out on that if they have to transfer to schools, etc. Just something to think about, or at least discuss with your son, before making that decision.
Baseball is awesome, but I wouldn't want to sacrifice the college experience for it, unless you're a pro-prospect and it's just a means to an end of making it to the Bigs.