As others have stated, congratulations on your admission to University of Maine!
OK, let’s talk coxing a bit:
Unfortunately, as you know, your list of schools has very few (IRA) men’s teams. You have a number of schools with women’s teams that may not have directly recruited coxswains and might be interested in providing soft support - Michigan, Wisconsin, BU, GW, Northeastern, Wesleyan, and maybe Syracuse - it’s of course extremely late, but you could certainly reach out. There are certainly competitive walk-ons on women’s teams, but of course it’s easier to walk on when pretty much all the coxswains (maybe except one) are walk-ons. A little bit of roster sleuthing can give you some sense.
And agreed with everyone else - you sound like a wonderful student and person and we’ll be pulling for you!