If the court finds a juvenile to be a juvenile delinquent, the court shall hold a disposition hearing concerning the appropriate disposition no later than twenty court days after the juvenile delinquency hearing unless the court has ordered further study pursuant to subsection (d). After the disposition hearing, and after considering any pertinent policy statements promulgated by the Sentencing Commission pursuant to 28 U.S.C. 994, the court may suspend the findings of juvenile delinquency, place him on probation, or commit him to official detention which may include a term of juvenile delinquent supervision to follow detention. In addition, the court may enter an order of restitution pursuant to section 3556. With respect to release or detention pending an appeal or a petition for a writ of certiorari after disposition, the court shall proceed pursuant to the provisions of chapter 207.