C24, you have not mentioned whether this coach has seen you play. Has he and on how many occasions.
Secondly, did this contact and request for transcripts come from the Coach reaching out to you or from you reaching out to the coach.
Third, have you seen this team play? If so, being very objective, do you think you can compete as a freshman and in what areas do you need to improve to do so?
Finally, I would not use your friend as a reliable reference for the teams catching needs. This needs to be information which you discuss directly with the coach. Toward that end, other than saying he needs 2 catchers in his class, what has he told you about how he sees your skills translating into what is needed with his team. What areas of improvement has he described would be necessary for you between now and August of 2018 to compete as a freshman. What has he talked about in terms of being bigger, stronger, more powerful and more explosive along with skills needed from behind the plate. While his taking your academics to admissions and your having an UV are good signs in some ways, my view is there is much more needed on your side to truly capture answers as to the interest of this coach in you as a player/catcher and your ability to compete and be successful in the program.
Good luck with this coach and program and others. You certainly have solid academics and test scores. Hopefully a number of conversations with this coach (listening carefully to his answers) will help you understand his interest in you as a potential player. If he truly wants you and believes you can contribute, he will communicate that in some ways which you have yet to hear apparently.