Am I worrying unnecessarily about getting a new laptop?

I definitely need a new laptop, this one is very slow despite repeated 'cleans' and getting rid of old files. I am just dreading the switchover, getting everything from one to the other. Some companies, like John Lewis, offer an installation service for around £65, but when I read the details, they are the easy bits which I can do anyway. Am I making something out of what is a minor task, or should I brace myself