My dad makes too much money, am I just screwed for financial aid then?

I want to go to a private university out of state. The only way this will happen, though, is if I can lower the tuition. I can't afford to pay $40,000 a year on my own, and I won't get much help from my dad either (he's planning on retiring soon and moving to the Caribbean). He makes about $175,000 a year and he has shared custody over me with my mom (who makes about $30,000 a year). If my mom had full custody over me would I be able to recieve financial aid (or is that considered fraud of some sort)? I want to go to Emory or Vanderbilt, but I can't afford it at normal price without any help. Advice?