Transports with luggages

Konnichiwa,

My husband and I we'll be in Tokyo in July 2015. At first, starting July 5th, we'll be staying in an hotel in Asakusa, for 3 nights days. After that, we plan to take the Ginza line to go to Shibuya station at around 13h00-14h00. Will we be okay if travelling in the subway with our two luggages at that hour?

In Shibuya, we're planning to stay in an appartment three nights, then leave Tokyo on July 11th (a saturday) at around 9h00-9h30 AM to get on the Yamanote line, using our JR pass, going from Shibuya station to to Tokyo station so we can catch the Hokuriku shinkansen (Kagayaki 509), leaving at 10h32 AM for Kanazawa. Will we be okay if travelling in the Yamanote with our luggages at that hour, or should we skip that plan and stay instead in Ginza (or as near to Tokyo station as possible)?

Thank you so much for your answers : they are sooo appreciated!