If they never read you your Miranda rights, the entire case won't be thrown out. If they were required to give you the Miranda advisement but didn't, the result is that any statement may be excluded, but if there is sufficient evidence to proceed without your statement, the case goes forward.
From what you're describing, you may have a difficult time convincing a private attorney to take your case on a pro bono basis, although it doesn't hurt to ask.
If you cannot afford an attorney, the court is obligated to provide on to you.
In answering your questions, I adopt what Mr. Dane has stated in the previous answer, as well as my previous answer to your other question regarding the admissibility of un-warned statements and their likely effect on the dismissal of your charges.
Your case sounds more complicated than the type of case that most "retained" lawyers would take on a pro bono basis, but you can still call around and see if your situation tugs at the heart of an attorney who may have the time to devote to resolving it for free. In the alternative, you can attend your first court hearing and advise the court that you cannot afford an attorney and request that an attorney be court-appointed to you. You will have to fill out a financial disclosure sheet and the judge will review it to ensure you qualify for court-appointed counsel. If you do, then the court will appoint an attorney for you. There is a $50.00 fee for getting a court-appointed attorney, that is charged to you at the conclusion of your case if you are found guilty, along with an hourly-rate of compensation for the court-appointed attorney. Should you prevail and your charges are dismissed or you are found not guilty, then you need not pay anything.