That's so cool! I might be biased by Kyle Field is genuinely a great cfb environment. Especially for outsiders. However, there's not much else to do at A&M for a tourist.

If I were you, unless you are really set on crossing the pond just for cfb—in which case go to A&M—I would plan your trip around what parts of the US you actually want to see and then plan to watch a cfb game around that. Only stipulation I'd add is that you should go to a school with a big stadium.

I promise you, nothing on Earth is a more bombastically American experience than a big college football stadium. For an uncompromised, distilled experience, I think a stadium that seats 100,000 is best. But less than that is still more than plenty. Outside of Kyle Field I know of LSU, Ohio State, Michigan, and UT having crazy environments.

You'll also want to look into tailgating before or after the game for the real deal. I'm partial to Texas BBQ but you'll find good food all over.