Having lived abroad in many countries myself, and while not having an electronics lab, I did have lots of computer gear, I'd recommend the following:
Anything you feel the need to buy new, buy compact portable devices as much as possible, especially for your expensive gear.
If there's an active used equipment store/exchange/online board, try to buy used gear for things that you can't get portable devices, and then if you find the need to move again, just sell your used gear before leaving.
Don't overdo your electronics lab. Just get the bare minimum of what you think is necessary, and then if the need arises for more equipment, buy it as the needs happen.