FWIW, I interned at an Office of the Federal Public Defender during my 1L summer and really enjoyed my experience there. It has not hurt me at all this fall during 2L OCI/callbacks. PM me if you have any specific questions.
I would recommend Miami. If you do ultimately pursue a PI career, you can switch your government loans to the income sensitive repayment plan and after 10 years, your loan will be discharged (as long as you stay in PI). Furthermore, if you change your mind for some reason, Miami will provide you with better options in private practice.
Do you know much about finances?
This thread makes me feel irritable.