<p>It is not two chances. Assuming typical process, SLO will only admit in the early round the applicants who are clear admits. Others go to the regular round (apparently, they don’t do early rejections).</p>
<p>[Admissions</a> < California Polytechnic State University](<a href=“http://www.catalog.calpoly.edu/admissions/]Admissions”>http://www.catalog.calpoly.edu/admissions/) does not give any indication that ED there is of any advantage in admissions.</p>
<p>Given cost issues, it would be better for you to apply RD (or non-binding EA or early rolling) everywhere, so that you can compare net prices in April.</p>