(1) If the applicable assets of the estate are insufficient to pay all claims in full, the personal representative shall make payment in the following order: costs and expenses of administration;
(2) reasonable funeral expenses;
(3) debts and taxes with preference under federal law;
(4) reasonable and necessary medical and hospital expenses of the last illness of the decedent, including compensation of persons attending him;
(5) debts and taxes with preference under other laws of this state;
(6) all other claims.
(7) No preference shall be given in the payment of any claim over any other claim of the same class, and a claim due and payable shall not be entitled to a preference over claims not due.