<p>The apparent differences between the two programs are:</p>
<ul>
<li>One more required CS course and one more elective CS course.</li>
<li>Substitution of an apparently more in-depth database course.</li>
<li>Substitution of Operating Systems for IT Systems.</li>
<li>More and harder math courses (but you probably took the harder math courses anyway as a math major).</li>
<li>More and harder science courses.</li>
</ul>
<p>If you do go with the BA version, you may want to see if you can substitute the more in-depth database course, and if you can substitute Operating Systems for IT Systems. Try to include CS electives in Computer Networks, Algorithms and Complexity, and Security as well.</p>