He is a senior in HS and has dealt with a nagging/reoccurring injury. What is his career path and what are his college plans should it be deemed unfeasible to pursue playing? This is a huge piece of the equation that is absolutely necessary before anyone here can provide specific advice, IMO. Also, what are the other parameters and/or limitations for college geographically, socially, financially, etc.?
Choosing a college path is or certainly should be (for the vast majority, anyway) so much more than deciding where one might be able to play baseball.
BTW, i can relate to your situation in so many ways... I'll be curious to see your answers to see just how many.