With only one year to offer them you need to target baseball programs where you can step right in and have an impact. Otherwise you're not worth the time investment to the coaching staff. So, step one is figuring out who are these programs. Step two is figuring out how you're going to sell your club baseball and summer ball history as a gotta have, instant impact player.
Have you been playing summer ball against other college players? If so, did you have good success against them. This is what you need to sell. What kind of contacts do your summer coaches have? Or are they throwing spaghetti against the wall to see what sticks?
To be honest I believe the best offer you're going to get is an attempt to walk on. In that tryout you better outshine every pitcher. I recommend you choose your grad school based on academics and not the long shot potential to play baseball.