Nesbit operation is a common procedure for Congenital Curvature of Penis (CCP) but sometimes grafting technique may be needed specially if the curvature is more severe. Grafting procedures may also cause less shortening of penis, which commonly occurs after Nesbit operation. Preoperative examination and post-erection photograph become very important in decision-making. I am not sure how severe your curvature is. As for as circumcision is concerned, it is usually performed during these operations in order to prevent future foreskin related complications but some recent studies have suggested doing circumcision only if foreskin is tight (phimosis) or in case of revisional surgery.