JR Pass or Individual Tickets

Hi, I'm arriving in japan next week and will stay for 14 days. Our itinerary looks like this right now:

Tokyo -> Nagano
Nagano -> Tokyo
Tokyo -> Osaka
Osaka -> Hiroshima
Hiroshima -> Kobe
Kobe -> Kyoto
Kyoto -> Tokyo
Tokyo -> Haneda airport

Is it worth buying the JR Pass or it'll be cheaper buying individual tickets? Can I use the JR pass to go from and to Haneda Airport?

Big thanks