I would say pretty good. Obviously Stanford's distance program is a cut above the others, but at most other Ivy-equivalent schools you'd be a solid recruit, depending on your other times.
The admissions-athletics process and academic standards are different everywhere, even among the ivies. You will have to ask the coaches what your chances are at the particular schools you're interested in. I'd bet most would probably give you admissions help. Don't know as much about top public schools but would expect the coach could guarantee you an admissions spot just to walk on with those grades and times. I don't know what the deal is with MIT or other top non-D1 institutions.
You should email all the coaches at the schools you're interested in, don't wait and hope they contact you. Keep it short, mention your PRs, SAT and grades, and why you're interested in the program. Ask if you could have more info on the program or some other vague conversation starter.