Probate will not be necessary in Illinois where an estate is valued at less than $50,000. In that case, an interested party may issue a small estate affidavit to collect any debts owed to the decedent.
You need an attorney. You say you won't consider doing a small estate affidavit, but your reasoning is questionable.
Good Morning. There are some basic facts missing from your question. Did your dad have a will? If not, the Intestacy Laws of Illinois will govern how the estate's assets are handled. You should talk to an attorney before you distribute your dad's assets.