Any person may adopt his spouse's child, and any person may adopt a child to whom he is related by blood or marriage. In the adoption of these children:
(1) no investigation or report required under the provisions of Section 63-9-520 is required unless otherwise directed by the court;
(2) no accounting by the petitioner of all disbursements required under the provisions of Section 63-9-740 is required unless the accounting is ordered by the court;
(3) upon good cause shown, the court may waive the requirement, pursuant to Section 63-9-750, that the final hearing must not be held before ninety days after the filing of the adoption petition;
(4) upon good cause shown, the court may waive the requirement, pursuant to Section 63-9-320(A)(2), of the appointment of independent counsel for an indigent parent; and
(5) upon good cause shown, the court may waive the requirement, pursuant to Section 63-9-60(B)(3), that the adoption proceeding must be finalized in this State.