Matsumoto to Kawaguchiko to Hakone

I will have a 14 day JR Pass travelling 1-16 April 2016 starting in Osaka and working my way to Matsumoto. From Matsumoto I would like to stop for 1 night at Lake Kawaguchiko then the following day head to Hakone area for sightseeing before heading to Tokyo later in the day. Is it best to travel by train for the Matsumoto to Kawaguchiko station? Then from Kawaguchiko station to Hakone on my way to Tokyo, use the train or a combination of bus and train? I do not want to be transferring too many times with luggage and I am also in a wheelchair but have no problems getting on and off buses and trains. I am a little concerned about accessibility at the railways stations at Matsomoto, Kawaguchiko, Kofu and Otsuki railway stations. Please advise me of the best way to go about getting from one destination to the other (listed above).