Wow, that's an amazing post ILVBB
I would agree with him, a substantial amount of schools here on the East Coast are known for their academic reputation, and are also strong in Baseball.
Being a LHP, your son has an advantage that a lot of players don't have,which is being coveted in baseball.
I personally think you should do what ILVBB said, and expand your horizons, if it is in the budget that is. I know that my father and I spend hour after hour discussing what is possible to achieve in the little amount of time that is left.
Video is great for your son, if you could show him doing well for a decent amount of time against a team that is known to be good, I think that sending Video to possible schools would be a prime way to follow up a phone call, and then hopefully a visit.
One thing I do wish I had done, is do a perfect game event, which I recieved an invitation for, but declined because of the fact that they're just expensive.
These events get you seen by tons of people, and I know there's an unsigned senior showcase in Rutherglen,VA which may have gotten the deadline pushed back, but it may be a bit late for that.
Impact Baseball also has one in Cary, NC, at the USA Baseball Complex, but those are both this weekend.
Also, there are good public DIII's, here in Virginia such as Christopher Newport, which is very good, and the coach is a great guy that wont lead you astray.
Take everything with a grain of salt though, and let your son do the work, don't do it for him.
My two cents.