Getting into graduate school is more a matter of good grades, good test scores (GRE, etc.) and good teacher recommendations, and not the “name” of the undergraduate institution. If graduate school (and, more to the point, paying for graduate school) is going to be important for you, then don’t worry so much about the prestige factor of your undergraduate institution; I assure you that your graduate school admissions committee will not.
Instead, pick a good undergraduate school that you can afford and where you will be happy, do your best, and concentrate on building a resume that will get you into a good graduate school.