(b) Set forth the following items:
1. The total amount of the premiums;
2. The amount of the down payment;
3. The principal balance, which is the difference between the amounts of subparagraphs 1. and 2.;
4. The amount of the service charge; and
5. The balance, which is the sum of the amounts of subparagraphs 3. and 4., payable by the insured; the number of installments required; the amount of each installment expressed in dollars; and the due date or period thereof.
The items need not be stated in the sequence or order set forth above; inapplicable items may be omitted; and additional items may be included to explain the computations made in determining the amount to be paid by the insured.