How to get to Tokyo downtown from Narita airport, with a bag, during rush hours?

Seems like the question is already answered, but I think some tips on how to move with bags in a rush hour in Tokyo would be appropriate in this thread.

Rush hours:

• Morning rush hour starts ~8AM and suddenly ends at ~10AM. It is really like that, at 9:30 all trains are crowded and after 10:00 not anymore.
• Evening rush hour has two waves. First one is around 6:15 PM and continues till ~10 PM. The second one is around the last train, which is about the midnight.
• Then, during weekdays streets will be crowded from 12:00PM till 2:00PM, because most office have lunchtime at this period.

Trains:

• Outside of rush hours trains ground trains are more crowded than underground ones.
• Toei Subway stations are often less conveniently located within large terminals, so if you can choose use Tokyo Metro instead.
• If you have large bags, use frontmost or rearmost car, the frontmost or rearmost doors. The place next to driver's cabin is usually somewhat less crowded and you can place bags there. If you get onto a crowded train with large bags in the middle of a car it will be much more troublesome.
• When going through the toll gates, use those next to the stationmaster's cabin: they are usually larger and allow large bags to be pushed through.
• Stairs are crowded. All stations have elevators, but at the most unpredictable places. During the rush hour it is the easiest way to get from the platform to the ground level.
• In Tokyo walk on the left side of the street when it is crowded.