The world of federal court is complicated and dealing with the federal authorities is tricky and dangerous. You should not be making a proffer without counsel. If you cannot afford an attorney the court will appoint one for you. The attorneys appointed in federal courts are carefully screened, experienced, and very capable.
You do not need general online Internet guidance--you need your own lawyer, familiar with ALL the facts in your case, your priors, the prosecutors--use your appointed attorney
NOT LEGAL ADVICE. FOR EDUCATION AND INFORMATION ONLY. Mr. Rafter is licensed to practice in the Commonwealth of Virginia and the US Federal Courts in Virginia. There is no implied or actual attorney-client relationship arising from this education exchange. You should speak with an attorney licensed in your state, to whom you have provided all the facts before you take steps that may impact your legal rights. Mr. Rafter is under no obligation to answer subsequent emails or phone calls related to this matter.
I agree with what the other lawyers said. You need to get a good attorney who practices law in federal courts. Do not deal with this by yourself, please feel free to contact me at 616-929-3199 if you have any questions.
My suggestion-get a lawyer and let the lawyer talk to the feds. This is serious. Stop trying to handle this on your own. Tell them you will talk only with a lawyer present. If you cannot afford one, ask to get one appointed ASAP.