if you're looking for a full Migration, so that you don't have to install Windows 7, then 8, then 8.1 etc... use EaseUS Todo Backup to clone the hard drive to the SSD, THEN upgrade to windows 8, then 8.1
No this isn't a product promotion, it's free (home use), I've used this software on multiple SSD migrations, it works good, you can even do it while running on the HDD with the windows you're migrating, i watched a movie when i used this on my personal SSD migration.