I just performed the operation on my wife's computer. Here are some things to think about:
1) Your documents, pictures, music, videos, etc - before you start - back them up to an external drive. The software will "skip" moving known document types, but doesn't do a good job. Better to have nothing in your folders.
2) Things you don't want installed to the SSD - remove them before running the cloning wizard.
Once you start, it is a real pain to "go back" and then rescan....