Suitcases are so old lady. Stick as much stuff as you can in your bike box without going over weight. Put the rest in a light duffel bag. My duffel weighs less than a pound and folds smaller than a novel. Either throw it out at the start point, store it at a hotel, etc. or strap it to the bike as I did and ride to your destination. (I rode from London to Budapest on an LHT like this)
Wrap your panties around your sharp pump edges and tape. Get on with it.