Luggage and travel

Hi, I will be flying into Narita then taking plane to KIX. From there I hope to use train to Dotonburi area where I will stay. From Osaka I will travel to Kyoto for one night then back to KIX airport area before flying to Tokyo. I will be staying in Shibuya Tokyo for remainder of trip but hope to go towards Mt. Fuji area for day trip. We will be traveling as a family 3 adults and 1 child. Each of us may have 1 large luggage and back pack. What would be the best methods of traveling on train with luggage and do you think we need JR Pass or Suica card.