Most students bring the following luggage combination to Gaming:
1 large rolling suitcase/duffle
1 large backpack (40-50 liter hiking backpack is usually good dimensions)
1 personal item, i.e. a regular backpack or satchel
Another suggestion is also bringing a collapsible day-pack along on your trips. You will most likely bring your hiking backpack for your weekend travels, as that’s easiest to get on and off trains with, but a bag like the ones on this page packs easily and lets you carry around what you need for the day without having all of your things to worry about.
Attached is a link to a site that can answer any questions about shipping your luggage overseas. You can also see how much it would cost to ship your luggage from one destination to the other. This could be helpful if you’re planning on traveling beforehand and/or after.