<p>Below are results I got from a College Abacus query (except where otherwise noted) for net costs to attend several schools mentioned above.
Assumptions
$30K family income (all earned by 1 parent)
family owns a business worth $100K, with $50K in business debts
$20K in checking account(s) and cash
$0 paid in federal income taxes
2 children (the OP and a sibling 14 years old)
both parents born in 1964
family does not own a home
4.0 GPA, 36 ACT</p>
<p>Net Annual Costs of Attendance
$27,522 Georgia Tech
$11,459 Alabama (may reflect full tuition merit scholarship)
$9,345 UC Berkeley (estimated with online NPC)
$7,412 Harvey Mudd
$2,505 University of Chicago
$2,500 MIT</p>
<p>YMMV</p>