We will be traveling to Kyoto in July from Kagoshima by train. Because we are traveling on a JR Pass we cannot take the Shinkansen Nozomi. Most of the trains we can take connect through Osaka. I am trying to avoid the after work rush hour. We will have luggage (medium sized backpacks) with us and think that might be very difficult when the trains are full. If we are on a JR Special Rapid Service train from Osaka to Kyoto at 15:44 to 16:05 with that be early enough in the day that the luggage will not be a problem?