JRpass suggestion please

Hi,
Could you please help if it's worth getting a 7 day JR pass for the following journey. I would be using it for:
-Osaka KIX to city center (not sure if it's covered by JR pass) -Osaka center to SummerSonic festival (is that route possible by JR pass?) -a one way travel from Osaka to Tokyo -Tokyo center to SummerSonic Tokyo (not sure if it's covered either?) -3 day sightseeing in Tokyo (are the main sights accesible by JRpass?) -Tokyo center to Haneda airport I'm unsure if it's best to buy the 7 day JRpass, or just the train ticket Osaka-Tokyo, as the rest won't be covered?
Thank you very much!