My DD was in a special living and learning community freshman year where they were taught research skills and did research. Employer really liked that type of experience so I think the things you plan on doing are fine. My DD also did some community volunteering with SWE which employers also liked. My DD joined an SAE competition team her second year and that experience opened a lot of doors for her with employers. Like others have suggested, take it easy the first semester of college and only do 12 units. Take the time to figure out how to “do” college including mastering time management which is important in engineering. Some colleges have competion classes which will add to you gaining good experience in engineering.
I agree-go to the college fair your freshman year to learn about the experience, however before you go-visit the career services office at your college and make sure your resume follows the engineering student format. Some of my DD’s friends attend the college fair their freshman year and did walk away with offers for the summer after freshman year. If you were accepted to A&M it shows you are already a smart student since it is tough to get into and employers will recognized it.
I do think doing study abroad after freshman year is a great idea. My DD did it in China and she got 3 engineering classes out of the way which then gave her the time duriing her second year to be on her SAE competition team.