Like most comments, my strong advice is to go for a light laptop with long battery life, and setup servers in AWS/DO/Linode as per your requirements. You will a

Like most comments, my strong advice is to go for a light laptop with long battery life, and setup servers in AWS/DO/Linode as per your requirements. You will always be able to destroy the server instances to save significant amount of money. You will always be able to add/remove resources depending on your requirements. And you will never have to worry about power supply. Can you imagine how efficient it will be when you run time consuming tasks before flight and get those done on arrival? ;)