What else do you plan to do in Sav? Keep in mind the school may not "want" you later than the arranged time, HOWEVER, I do suggest you spend additional time in Sav. I'd recommend speaking with someone at Rockhouse, given that Sav is kind of a large town... what do you want to do and see.... it may be helpful to have a local driver/guide to take you around to notable or interesting spots. Just some thoughts