If Dagobah is going to be added to the beginning, how will Luke get to Jabba's Palace? He would fly his ship. So have a scene of him flying in to Tatooine like Obi-Wan and Grievous on Utapau, and then have him have his conversation with Ben right before he is going to go in to Jabba's.
Could Luke and Bens conversation be moved to later in the movie somewhere?